I ordered a set of rubber teat cups to hook up a milking machine to a life size fiberglass cow. This is for a display in Canton (MI) Historical Society's agricultural museum. Hamby went out of their way in helping me. They asked for a picture of the cow, which I sent. They then gave me suggestions for hooking it up and sent an extra, different, set of cup just to make sure I had the right ones. This is outstanding customer service you do not get everywhere. I highly recommend them.