I had recently bought a Lock and Load grease gun fitting which is a fantastic item. A friend of mine mentioned that there is a needle fitting that attaches to the lock and load fitting. So, went to Napa and they have their own brand which is pretty good so I picked up a kit. Their part number is 700-1193. For those who never used this it is a great addition to your maintenance. I use it for the ball joints that no longer have grease fittings. Just insert into the rubber cup and squeeze the gun. I also use it on my lawn mower and auto. It is pretty handy. The needle is about the size of a doctors needle so the hole is extremely small. Just thought I pass this along.