Pedersoli USA029 is a universal wrench for the chimneys of black-rifle weapons with additional adapters.
The chimney wrench is one of the most important pieces of equipment for any black-arms shooter, without which it is impossible to disassemble the weapon. The Pedersoli USA029 wrench has a 6 mm (.237") diameter hole. It comes with additional adapters of 5 and 7 mm, so the wrench fits many models of black-powered weapons.