Heavy Duty Coupler (JCBL-4008) Category: Lubrication Tools Description Description Features Designed to Meet the Pressure Requirement of Grease Gun Four Jaw Coupler. Three Jaw Coupler. 45′ & 90′ Coupler. Straight Coupler. Finish: Chrome Plated, Zinc Plated. Related products Suction Gun (JCBL-4004) Read more High Pressure Oil Can – Pistol Type (JCBL-4009) Read more Flexible Hose With Hydraulic Coupler (JCBL-4007) Read more Lever Action Grease Gun (Economy Model) (JCBL-4002) Read more