The Vevor grease gun coupler is designed for high-pressure lubrication tasks with compatibility across manual, electric, and pneumatic grease guns using 1/8-27 NPT fittings. Its 6-jaw locking structure and spring steel plus #45 steel construction help maintain a secure connection at pressures up to 10,000 PSI. The compact body makes it easier to work in tight spaces, while the one-hand operation simplifies locking and releasing. This set also includes a hose and a cleaner to support convenient maintenance and use.