features and benefits:
- 4" reach lock on coupler for recessed zerks
- locks on up to 10000 psi
- integrated pressure relief valve
- case hardened steel bearings and sleeve construction
- easy on/easy off
gripnlube lock-on grease coupler 4 inch reach lock on coupler for recessed zerks with exclusive integrated pressure release valve.Fits most grease guns, zerks and accessories.Proven for use in applications up to 10,000 psi.Ideal for use with cordless & air operated grease guns.1 year limited warranty.