Grease tooltip is stainless steel , which is strong and without breakage , leakage , warping , or typical wear and tear Its good spring performance is perfect for long-time use 1 / 8 NPT grease tool fitting is suitable for all standard grease tools , grease tools It also fits all DIN and SAE grease fittings , just replace the existing grease tool coupler The smooth retraction mechanism allows one-handed Once the grease connector is locked onto the nipple , it will remain open , both hands to operate the grease tool The extended grease tip allows access to recessed mechanical parts , which helps locate the grease nipple in blind spots Easy to use in narrow areas The grease tool coupler uses reinforced and sealing gaskets to long lasting stable performance and leakage even at extreme pressures of 10 , 000, Manufacturer: Watreketal