Enhance Your Operations with Tectran's PROFLEX-SPTM Aircoils Premium Construction: Crafted with premium, unprocessed virgin nylon tubing Extreme Cold Flexibility: Rated at -40degF for superior cold flexibility Anti-Sag and Stretch: Utilizes TECTRAN's Anti-Sag and Stretch manufacturing & coiling process Corrosion Resistant: Equipped with DOT brass fittings featuring the TECTRAN identifier Robust Spring Guards: Heavy-duty plated spring guards designed for corrosion resistance Extended Coil Coverage: Spring guards with closed coils extending well past 2\" from the fitting, exceeding DOT regulations Precise Fit: 1/2\" tube O.D. with 1/2\" LIFESwivelTM tractor fitting threads and 1/2\" FLEXGrip-SPTM threads DOT Compliance: Exceeds DOT FMVSS 106 standards (49 CFR 571.106 & 49 CFR 393.45) FLEXGrip-SPTM - Premium, thermo-elastomeric gladhand grip (Patent: D761,644): -Tapered handle flexes with air lines during tight turns -Thicker at the fitting for kink protection during gladhand connections -Corrosion resistant, all brass fittings -Allows gradual bend restriction during tight turns -Color-coded grip helps minimize incorrect tractor/trailer connections LIFESwivel(R) - A live swivel design featuring all brass construction to eliminate corrosion (Patent Pending): -Fitting located on the tractor end of the coil -Double O-ring leak-free \"Life\" design -Quick & easy single wrench installations -3 Year Limited Warranty Upgrade your aircoils to the superior quality of PROFLEX-SPTM by Tectran, offering enhanced performance, durability, and compliance with DOT standards.