For use with hydraulic type grease fittings Heavy-duty grease gun couplers for cordless grease guns with max operating pressure up to 10,000 psi The DCGG5701-3 Heavy-Duty 1/8" NPT Grease Gun Coupler 3-Pack is used with hydraulic type grease fittings for cordless grease guns with max operating pressure up to 10,000 psi.
