Field repair your Snap on MG725 or MG725A 1/2" drive impact wrench.
OEM MG325 Tune Up KIT For Snap On MG325 3/8" Impact Wrench Doesn't Fits MG31
SNAP ON MG325 TUNE UP KIT+NEW STYLE REVERSE VALVE+ANVIL BUSHING+WEAR PLATE SET
SNAP ON MG325 TUNE UP KIT WITH BEARINGS FITS 3/8" DRIVE MODELS DOES NOT FIT MG31
MG325 Tune Up Kit with Bearings Compatible Snap On 3/8 Inch Drive...