I stand behind this product if you have something that goes wrong in my workmanship or new materials I will make the corrective repairs in my shop and get it back to you promptly. Dirty or wet air or undersized air fittings that choke off the tool at your shop or tool abuse is not something I bear responsibility for in the repair cost. I have a garage based small tool repair business. SNAP-ON OBSOLETE RESTOMOD AIR TOOLS.