For Ingersoll Rand IR2112 &IR2115 3/8" Ultra Duty Impact Wrench Anvil Gun O-ring

(Fit for Ingersoll Rand IR2112 & IR2115 Series 3/8" Impact Wrench. include fits for Matco, for Cornwell and a (for) Mac tools - (for) Craftsman 3/8" Impact Wrench. 2) Solve the problem that the sleeve always falls off the impact gun during work.