DescriptionBicycle Grease Gun InjectorLightweight and durable design with easy one-handed application and a precision sealed pump that prevents leaks. Check the diameter of the nozzle for the grease oil tube is about 13mm. Because the joint of the gun is 12.8mm. Roll into the grease tube. Do not push forward the blue button when squeezing the tube until you will see the oil in the gun. L:175mm
