ColorFit by Milton Industries - T-Style Pneumatic Couplers PUT COLOR TO USE IN YOUR SHOP â?? Easily match couplers to the right plugs using color, blue to blue, no more guessing. â?? Use color to distinguish between air lines, such as lubricated vs. non-lubricated, or high pressure vs. low pressure. SUPERIOR PRODUCT DESIGN â?? Durable patent-pending steel sleeve coupler design outlasts the competition by putting steel where you need it most. â?? Milton uses a proprietary anodizing process that simply lasts longer. COMPATIBILITY â?? ColorFit T-style couplers and plugs are compatible with traditional Milton T-style couplers and plugs, competitor T-style couplers and plugs, and competitor blue couplers and plugs. â?? Threaded connect" NPT. INCLUDES â?? 10 male couplers SPECIFICATIONS â?? Do not exceed 300 PSI â?? For use with compressed ai