Air Brake Tubing, Type B, Length 100 ft., Tube Size 0.566 In., Outside Dia. 3/4 In., Material Polyamide/Polyester, Color Black, Standards SAE J844, J1131, J2492-3, and DOT-FMVSS 106 Air Brake Tubing100% polyamide provides a wider operating temperature range, superior abrasion resistance, and enhanced flexibility. Offers burr-free cuts and improved assemblies.