(When you just need one and a back up hog ring and o-ring for your impact wrench anvil here is a cost effective set for you. 2) 2pcs O-rings for 1/2" anvils.
3/4" Socket retainer ring set- o-ring + socket retainer for all 3/4" Wrench
3/8 Inch Impact Socket Retainer Ring Clip X3 with O-ring for Milwaukee Brushless
1/2" IMPACT WRENCH GUN SOCKET RETAINER RING WITH O'RING - 3 SETS
Socket Retainer Ring + O-ring for ALL 1/2" impact wrenches 2pcs
1" Socket retainer Ring + O-Ring for ALL 1" drive Impact guns
3/8 Socket Retainer Ring + O-ring for 3/8" impact wrenches 2pcs original
