Works like a charm!
I had tried to make something similar to this adapter and was surprised to see one on the market. The price was good and delivery was prompt. This product has been a real boon for a small business, filling syringes with grease.
ProsIt fits into a 1/4 NPT pipe and adapts to a syringe. With the right setup you can jig up to fill multiple syringes at one time. We do ten at a time.