Senco MW SC2 Rebuild kits by William Hendricks Senco M1 M2 M3 SC1 SC2 O-ring rebuild kit + LB5005All the o-rings in the tool + Washer Firing Valve Seal LB5005, schematic and o-ring reference sheet includedAvailable Qty: 10 Senco LB5005Senco Firing Washer Valve LB5005 For Models M1 M2+ M3+ MW SC1 SC2 SFN2 Senco Bumper BB0147Senco Bumper # BB0147Available Qty: 3