[HEAVY DUTY ANTI-SKID HANDLES]- Heavy duty machined aluminum gladhands extension handles. Our handles are more and not easy to break. One-piece body, rugged anodized aluminum is more and corrosion resistant than cheaper plastic models. [EASIER TO USE]- The Extension Gladhands Handles are installed between gladhand and air brake lines. Gives the driver more grip area, more labor-saving. Our wide hex handles provide better grip than the small cylindrical, and provide greater leverage for ease of coupling/uncoupling air lines. [NO-LEAK]- Leak proof on the handle thread. They that glad hands are tightly connected under strong air pressure.This is what many other grips do not have, and is the main cause of air leakage. [Size & Color]- 1/2 NPT threaded - Handles Port Size. Color coded red & blue handles for ease of emergency and service line identification. [Widely Used]- Replace for 12-600, etc. General design can connect quickly to most trailer air lines. Colour: red+blue Material: