Locking & Sealing Design: With the upgraded powerful 6 jaws and premium sealing gasket, this grease gun easily passes a 10,000 PSI pressure test, ensuring a secure, tight connection to the Zerk fitting and no grease leakage Practical Accessories: This grease gun accessory set also includes a 1/8 NPT threads grease gun needle and a 12” spring flex hose. They also fit 1/8 NPT standard grease gun. The grease tip makes it easier to inject grease into tight spaces such as sealed bearings. The grease hose gives the grease gun more flexibility and offers more possibilities for use(The complete kit contains 2PCS grease gun couplers, 2PCS grease gun needles and 2PCS grease gun hoses) Sturdy and Durable: The nickel-plated alloy steel of this grease gun is durable and effectively prevents surface scratches. The rubberized non-slip handle in provides a comfortable and reliable grip. Thickened spring provides strong locking force for reliable and long-term use Easy to Operate: The thick spring makes the release mechanism smoother, and with the non-slip rubber pads on the handle, it can be easily operated with one hand. After confirm it locked on the Zerk fitting, users can operate the grease gun with both hands free Universally Compatible System: This grease gun coupler is suitable for all 1/8 NPT standard grease guns, including pneumatic, electric, manual, and mini models. It is also available for DIN and SAE grease nipples and metric & SAE Zerk fittings Brand WORKPRO Model 6PC Grease Gun Coupler Set Item Weight 15.8 ounces Manufacturer Hangzhou Great Star Industrial Co,.LTD Item model number 114158 Package Dimensions 12.83 x 3.19 x 1.22 inches Manufacturer Part Number 114158