Features High Strength Spring: This 1/8in NPT grease gun fitting is made of high strength spring to provide strong locking force, the maximum working pressure is 12000PSI, which is very practical. Easy To Operate: This grease joint fitting has a fluent and powerful 3 jaw locking function, it can be operated with one hand, no need to hold it to lubricate, and after locking it can liberate your hands, save your time and effort, it is a good helper for your work. Excellent Carbon Steel Material: This grease gun coupler is made of excellent carbon steel material, which is sturdy and abrasion resistant, not easy to be damaged, and the SURFACEs is galvanised, which plays the role of anti erosion and rusts prevention. Good Compatibility: This high pressure grease nozzle fitting has good compatibility and is suitable for all 1/8in NPT grease guns, which is used to lubricate all machinery and equipment filling. Wide Application: This grease coupler has a wide range of applications, which is suitable for hard to reach grease parts of automobiles, mechanical equipment maintenance, agricultural axles and drive systems, trucks, industrial equipment maintenance, etc., and is also suitable for most manual grease guns. Specification: Item Type: Grease Gun Coupler Material: ABS, Carbon Steel Application: Suitable for automotive, machinery and equipment maintenance, agricultural axles and drive systems, trucks, industrial equipment maintenance and other hard to reach grease parts, but also for most manual grease gun. How to Use: Take out the grease gun coupler for immediate use. packing list: 1 x Grease Nozzle 1 x Hose 3 x Accessories 1 x Storage Box Package List 1 x Grease Nozzle 1 x Hose 3 x Accessories 1 x Storage Box