Product Features:NiCopp Does Not Rust or CorrodeDOT Approved for Hydraulic Brake SystemsBendable by Hand- 58 percent easier than steel tubing.Finished Lines are Available for Domestic and ImportBlack Oxide Fittings 2X Corrosion Resistance NiCopp lines and tubing meet the following specifications: SAEJ1047, ISO 4038, SAEJ1650, DIN 74234, BS2871