Just received my new locknlube from Amazon the other day. I put it on my Milwaukee grease gun and wow does it work well. I had several pins on my front end loader that would not take grease with just the battery powered gun but when I put the locknlube on it blew right through the old grease and they take grease fine now. The Milwaukee I have produces 8000psi. I couldn't hold the tip on the zerk at that pressure. The Locknlube cured that.