DescriptionPneumatic Small Wind Gun Shaft 1/2 Small Wind Gun Strike ShaftLong Shaft Trip Shaft Wind Gun Accessories (all kinds of models are complete)Buyer Note:One: There are many sizes and models of impact shafts and spindles. Please check the dimensions carefully before purchasing.When buying a strike block, be sure to check other parts of the jackhammer for wear and damage. If you don't check carefully, you willContinue to damage.Focus on checking the impact shaft, return wheel, return wheel cover, housing bushing, bearings, bearing housings and cams.1: Whether the impact surface of the impact shaft and the impact block has collapsed.2: Whether the back wheel is deformed.3: Whether the return wheel cover is broken or the opening is worn out.4: Whether there is any looseness or wear of the connecting sleeve between the shell and the percussion shaft.5: The bearing is damaged or the gap is too large.6: Whether the bearing seat is worn, so that the bearing cannot be firmly fixed on the bearing seat.7: Whether the opening position of the cam and the impact block is cracked or deformed, and whether the inner circle connected with the impact shaft is worn or not.Please be sure to eliminate the above problems before replacing with new accessories