The thing came with nothing, but the rubber is dirty and scratched apparently used, I checked the hole for the bolt, there is no scratch, but it broke after 15 nails, started air and oil to let through . Maybe I'll take someone's lemon!? I've posted a replacement, will update if problems arise. Have gotten a replacement so far so good although it takes a while to drive a 3 1/2 inch nail into harder wood I am considering doing my compressor too (I have a 6 gallon compressor) and it will workโฆ