Hose Extension For Use With Hand Operated Grease Guns Size 12 in L Connection 1/8 in MNPT Max Pressure 3 500 psi Min Burst Pressure 10 000 psi Working Pressure 3 500 psi Material Steel/Thermoplastic Features Allows Greasing Access to Nipples with Limited Reach Plated Steel End Connections with Hydraulic Crimping Includes Spring Guard