Hi Sam.When a hammer is ordered with the base it comes all set up ready to be bolted down wired up,fired up and ready to hammer.The base for my 88lb added an extra 840lb to the hammer making it weigh over 2700lb.I have it bolted down to a concrete slab which,with the rebar is over 6500lb,it is very stable.I am just getting to know mine,so far I am real happy.