• 1/2" & 3/8" Square drive socket retainer rings with O-ring.
• This kit will fit all major brands of electric and pneumatic wrenches with 1/2" or 3/8” square drive.
• IR, Snap On, Chicago Pneumatic, Florida Pneumatics, Air Cat..
• Package includes 5 sets of 1/2", 5 sets of 3/8" and Anvil Retaining Ring Install Tool