1Leakage Free Design: The reinforced jaw and premium sealing gasket can prevent leakage even under the extreme pressure of 10000 PSI, ensuring long term service, and no longer wasting grease everywhere. 2Good Spring: The spring of grease tool coupler has good performance, and can ensure slippy sliding and stable performance throughout its life cycle. 3Double Handle: Labor saving double handle design for easy oil injecting, the delicate texture of the handle ensures the friction with the palm to avoid accidental slipping. 4Replacement Parts: This oil nozzle can be used as a replacement part of grease tools to replace damaged original parts and prolong the service life of spray tools. 5Convenient to Use: Grease tool accessories can be locked and released quickly, easily and conveniently, with simple operation and easy use.