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 Bucket Grease Pump – With Trolley (JCBL-4014) Read more Caulking Gun – Skeleton Type (JCBL-4012) Read more Suction Gun (JCBL-4004) Read more Grease Gun Pistol Type – Micro (JCBL-4011) Read more