AAS Copper Nickel Tubing CN-316 3/16" x 25' Brake Line with 15 Metric Fittings AAS Copper Nickel Brake Line Meets SAE 1677 Standards, DOT Approved 88% Copper, 10% Nickel, 2% Iron Extremely Pliable, Easy Flaring and Bending - Will Not Rust Kit Includes: 1 - 3/16" OD X 25' Roll of Copper Nickel Brake Line and 15 Fittings 10 Tube Nuts and 5 Unions All Metric Inverted Flare