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Both the sizes for unions and nuts are both 7/16-24 threads, which is the regular fitting size for 1/4 inch tube.

Lifetime warranty, we promise as long as the lines are installed correctly out lines will outlast the life of the vehicle.

Inverted flare nut: these unions and nuts are the best option to join two 1/4 inch brake lines together. Operating temperatures range from -53 to 121 degrees C -65 to 250 degrees F.


Fitting assortments are designed for specialty and general repair shops. Assortments are packaged in shatter-resistant, selecting, see-through plastic trays. 32 sku brake line Fitting Assortment.


We promise that if the line is installed correctly out, the lines will extend the lifespan of the vehicle. Zinc coated, Rustproof, Corrosion Protection.
It is also widely fit for household, industrial and commercial uses. Package include - muhize brake line kit replacement with 16 fittings: ① 12 x 1/4”7/16-24 inverted tube Nut; ② 2 x 1/4”9/16-18 Inverted Tube Nut; ③ 2 x 1/4”1/2-20 Inverted Tube Nut;.


Inverted flare union- any 2 1/4 inch brake lines can be easily joined with Muhize unions. Package include - 10 x 7/16-24 threads unions. The size of the unions are 7/16-24 threads, which is the regular fitting size for 1/4 inch tube.

Package include - part 2: muhize upgraded 16 fittings for 1/4”brake line: ① 12 x 1/4”7/16-24 inverted tube nut; ② 2 x 1/4”9/16-18 Inverted Tube Nut; ③ 2 x 1/4”1/2-20 Inverted Tube Nut; Note:The nuts is regular 1/4 inch tube fitting size.
Please check before shopping! Higher quality - muhize brake line fittings are made of durable brass with unique rust corrosion proofing technology. Widely application - muhize 3/8' - 24 or 7/16-24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 3/16 or 1/4 inch brake lines tube.
1. MuHize
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10 Nuts, MuHize 15 Pieces 7/16-24 Threads Brake Line Fittings Assortment for 1/4” Brake Line Tube 5 Unions
#adMuHize #ad - Widely application - muhize 7/16-24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 1/4 inch brake lines tube. Package include - muhize upgraded brake line fittings replacement pack of 15: ① 5 x metric 7/16-24 threads unions; ② 10 x metric 7/16-24 threads nuts; Note:Both the unions and nuts is metric 7/16-24 threads regular 1/4 inch tube fitting size.Both the sizes for unions and nuts are both 7/16-24 threads, which is the regular fitting size for 1/4 inch tube.
More information #ad
100% brand new & made from excellent materials, and good contact. Please check before shopping! Inverted flare union- any 2 1/4 inch brake lines can be easy to joined with Muhize unions. Higher quality - muhize brake line fittings are made of durable brass with unique rust corrosion proofing technology. Professional - muhize focus on outstanding features and benefits of braking line.Brand | MuHize #ad |
Manufacturer | MuHize #ad |
Part Number | MUBRAKE-FIT15-14 |
Model | MUBRAKE-FIT15-14 |
More information #ad
2. 4LIFETIMELINES
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SAE Thread, 4LIFETIMELINES 25 ft 1/4 True Copper-Nickel Alloy Non-Magnetic Brake Line Replacement Tubing Coil and Fitting Kit, 16 Fittings Included, 0.028 inch wall thickness, Inverted Flare
#ad4LIFETIMELINES #ad - Meets all sae and iso specifications - Our tubing is the best quality tubing on the market. Complete 1/4" replacement kit includes 16 fittings: 2 x 1/4” 7/16-24 inverted tube nut, 2 x 1/4” 9/16-18 inverted Tube Nut, 10 x 1/4” 7/16-24 inverted tube Nut Long, 2 x 1/4” 1/2-20 Inverted Tube Nut.Lifetime warranty, we promise as long as the lines are installed correctly out lines will outlast the life of the vehicle.
More information #ad
True copper nickel alloy non magnetic tubing - super easy bending and flaring, no tools necessary. Rust and corrosion proofing technology - Our Copper Nickel Alloy lines are the longest lasting line and are much better than standard steel tubing.Brand | 4LIFETIMELINES #ad |
Manufacturer | 4LifetimeLines #ad |
Height | 1 Inches |
Length | 14 Inches |
Width | 14 Inches |
Part Number | LTCC425KIT |
More information #ad
3. lkjhgfdsa
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Minimprover 12 PCS Brass Inverted Flare Brake Line Assortment 4 Unions 8 Nuts Fitting For 1/4" Tube 7/16"-24 Inverted Threads Automotive Brake Line Systems
#adlkjhgfdsa #ad - Package include: 8 pcs flare brake line nut and 4 PCS Union for 1/4" tube. Size & material: heavy duty brass, strong and durable. Better than steel both the unions are 7/16-24 Inverted threads regular 1/4 inch tube fitting size.Inverted flare nut: these unions and nuts are the best option to join two 1/4 inch brake lines together. Operating temperatures range from -53 to 121 degrees C -65 to 250 degrees F.
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Fit for: most common inverted flare/double flare sizes for 1/4 inch tube 7/16-24 Inverted threads, poly coated, Nickel Poly Armour, for use with 1/4 inch steel, Cupronickel Tubing or copper brake lines. Firm and durable: minimprover brass for corrosion resistance, high temperature ductility and low magnetic permeability. Comes with 1 year warranty.Brand | lkjhgfdsa #ad |
Manufacturer | Minimprover #ad |
Part Number | 1/4" |
More information #ad
4. 4LIFETIMELINES
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SAE Thread, 16 Fittings Included, 4LIFETIMELINES 25 ft 1/4 Stainless Steel Brake Line Replacement Tubing Coil and Fitting Kit, 0.028 inch wall thickness, Inverted Flare
#ad4LIFETIMELINES #ad - Limited lifetime Warranty through 4LifetimeLines. 316l marine-grade tubing and fittings for highest level protection against rust and corrosion. Complete 1/4 brake line replacement kit with stainless steel fittings and coil.More information #ad
Perfect for restoring classic cars or for giving your vehicles lines an extra layer of protection. Fittings included: 10 1/4 7/16-24 inv long, 2 1/4 7/16-24 inv, 2 1/4 9/16-18 inv, 2 1/4 1/2-20 Inv.Brand | 4LIFETIMELINES #ad |
Manufacturer | 4LifetimeLines #ad |
Height | 2 Inches |
Length | 20 Inches |
Weight | 1.94 Pounds |
Width | 14 Inches |
Part Number | LTSC425KIT |
Model | LTSC425KIT |
Warranty | Limited Lifetime |
More information #ad
5. 4LIFETIMELINES
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Union, 4LIFETIMELINES Fitting Assortment, 32 SKU, 3/16 Inch and 1/4 Inch Tube Nut, Adapter
#ad4LIFETIMELINES #ad - Each assortment contains a specific collection of fast moving fittings that should be kept on hand when working with automotive hydraulic braking systems.Fitting assortments are designed for specialty and general repair shops. Assortments are packaged in shatter-resistant, selecting, see-through plastic trays. 32 sku brake line Fitting Assortment.
More information #ad
Lifetime warranty included on all products purchased from 4Lifetimelines. Contains all popular tube nuts, unions and adapters for working on and creating any 3/16" and 1/4" outside diameter brake lines for both inverted and bubble flares. Locator labels on the inside lid make locating, and re-filling quick and easy.Brand | 4LIFETIMELINES #ad |
Manufacturer | 4LifetimeLines #ad |
Height | 3 Inches |
Length | 12.5 Inches |
Width | 18.25 Inches |
Part Number | LTA316140 |
More information #ad
6. The Stop Shop
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Metric & SAE 81 Fittings Total, The Stop Shop Brake Line Fitting Assortment for 3/16 Inch & 1/4 Inch Tubing, Inverted Flare & Bubble/ISO Flare
#adThe Stop Shop #ad - Included: 3/16" fittings inverted flare 12 - 3/8"-24, 2 - 9/16"-18, 3 - 7/16"-24, 2 - 12x1mm, 2 - 11x1.5mm, 2 - 1/2"-20 Total of 81 fittings. Inverted flare 10 - 10x1mm. Coated for corrosion resistance.More information #ad
Bubble/iso metric 10 - 12x1mm, 2 - 12x1. 75mm, 2 - 1/2"-20, 2 - 12x1. 5mm, 2 - 13x1. 5mm. Included: 1/4" fittings inverted sae style 12 - 7/16"-24, 2 - 12x1. 25mm, 2 - 11x1mm, 2 - 9/16"-18. Bubble/iso flare 10 - 10x1mm, 2 - 13x1. 5mm.Brand | The Stop Shop #ad |
Manufacturer | The Stop Shop #ad |
Part Number | FKALL |
More information #ad
7. MuHize
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MuHize 25 Ft. of 1/4 Brake Line Tubing Kit, Flexible Zinc-Coated Steel Tube Roll 25 ft 1/4" Rustproof, Corrosion Protection Includes 16 Inverted Flare Fittings
#adMuHize #ad - The lastest copper nickel alloy brake lineis better than standard steel tubing with corrosion resistance. Super easy bending & flaring - muhize zinc-coated brake lines are easy to be bent with great flexibility by hand and flare by simple tools.We promise that if the line is installed correctly out, the lines will extend the lifespan of the vehicle. Zinc coated, Rustproof, Corrosion Protection.
More information #ad
Anti-rust - muhize brake lines are made with unique rust corrosion proofing technology. Professional - muhize focus on outstanding features and benefits of braking line. Widely application - muhize 1/4 brake line tubing kit commonly fits for Hydraulic Braking Systems, Fuel Systems, and Transmission Systems, etc. It is also widely fit for household, industrial and commercial uses. Package include - muhize brake line kit replacement with 16 fittings: ① 12 x 1/4”7/16-24 inverted tube Nut; ② 2 x 1/4”9/16-18 Inverted Tube Nut; ③ 2 x 1/4”1/2-20 Inverted Tube Nut;.
Brand | MuHize #ad |
Manufacturer | MuHize #ad |
Part Number | MUBRAKE-KITSI14 |
Model | 25 ft 1/4" |
More information #ad
8. The Stop Shop
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The Stop Shop Metric Brake Line Fitting Kit for 1/4" Tube. ISO/Bubble Flare
#adThe Stop Shop #ad - Sizes: 10 - 12x1mm, 2 - 12x1. 5mm, 2 - 12x1. 25mm, 2 - 12x1. 75mm, 2 - 11x1mm, 2 - 13x1. 5mm. This kit has a total of 20 fittings all for 1/4" tube. All fittings are for ISO / Bubble flare style in metric. Fittings are coated for corosion resistant.More information #ad
Brand | The Stop Shop #ad |
Manufacturer | The Stop Shop #ad |
Part Number | FK17 |
More information #ad
9. MuHize
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10 Pieces Car Unions 7/16-24 Threads Nuts Assortment2022 New, for 1/4” Camper Brake Line Tube Fittings, MuHize Brake Line Fittings
#adMuHize #ad - 100% brand new & made from excellent materials, and good contact. Professional - muhize focus on outstanding features and benefits of braking line fittings.Inverted flare union- any 2 1/4 inch brake lines can be easily joined with Muhize unions. Package include - 10 x 7/16-24 threads unions. The size of the unions are 7/16-24 threads, which is the regular fitting size for 1/4 inch tube.
More information #ad
Note:the unions are 7/16-24 threads for regular 1/4 inch tube. Widely application - muhize 7/16-24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 1/4 inch brake lines tube. Please check before purchasing! Higher quality - muhize brake line fittings are made of durable brass with unique rust corrosion proofing technology.Brand | MuHize #ad |
Manufacturer | MuHize #ad |
Part Number | MUBRAKE-UNION10-14 |
Model | 7/16-24 for 1/4” Brake Line |
More information #ad
10. MuHize
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MuHize Inverted Flares on 3/16 and 1/4 Tube SAE Brake Line Fitting Kit on 3/16" 19 Fittings and 1/4" 16 Fittings Tube Pack of 35, Upgraded Brake Line Fitting
#adMuHize #ad - Package include -part 1: muhize upgraded 19 fittings for 3/16”brake line: ① 3 x 3/16” 7/16-24 inverted tube nut; ② 12 x 3/16" 3/8-24 inverted tube nut; ③ 2 x 3/16” 1/2-20 Inverted Tube Nut; ④ 2 x 3/16"9/16-18 Inverted Tube Nut;.Package include - part 2: muhize upgraded 16 fittings for 1/4”brake line: ① 12 x 1/4”7/16-24 inverted tube nut; ② 2 x 1/4”9/16-18 Inverted Tube Nut; ③ 2 x 1/4”1/2-20 Inverted Tube Nut; Note:The nuts is regular 1/4 inch tube fitting size.
More information #ad
Professional - muhize focus on outstanding features and benefits of braking line. 100% brand new & made from excellent materials, and good contact. Please check before shopping! Higher quality - muhize brake line fittings are made of durable brass with unique rust corrosion proofing technology. Widely application - muhize 3/8' - 24 or 7/16-24 threads fittings commonly fits for regular inverted flare/ double flare sizes for 3/16 or 1/4 inch brake lines tube.
Brand | MuHize #ad |
Manufacturer | MuHize #ad |
Part Number | MUBRAKE-FIT35MUT-2KIT |
Model | MUBRAKE-FIT35MUT-2KIT |
More information #ad