Nickel-copper alloy is very flexible making for super easy bending & flaring for installation - You can hand bend our brake lines with no bending tools needed | Rust and corrosion proofing technology - Our Copper Nickel Alloy lines are the longest lasting line and are much better than standard steel tubing. Copper Nickel lines are ideal for vehicles experiencing harsh weather and environmental conditions | Meets All SAE and ISO Specifications - Choose our tubing with confidence for unmatched reliability and adherence to standards. Our tubing is rigorously tested and meets all Society of Automotive Engineers (SAE) and International Organization for Standardization (ISO) specifications, ensuring it is the highest quality tubing available on the market. Don't compromise; opt for the best in strength, durability, and performance. Trust our tubing to meet the stringent requirements of your applications | We take pride in producing the best fuel, transmission and brake lines in the industry. Our Limited Lifetime warranty protects all of our products against defects for its entirety as long as it is installed correctly | Complete Brake Line Replacement Tubing Kit Assortment - Includes 16 Fittings: 2 x 3/16” (7/16-24) Inverted Tube Nut, 10 x 3/16” (3/8-24) Inverted Tube Nut, 2 x 3/16” (1/2-20) Inverted Tube Nut, 2 x 3/16” (9/16-18) Inverted Tube Nut