Whiteside 6000X Conversion Kit for Stile & Rail Bits/plywood panelsThis conversion kit is for cabinet door construction with undersized 1 4 plywood panels (Actual panel thickness of 7 32 or 5. 5 mm). Whiteside's conversion kit #6000X converts the regular full size Stile and Rail bits to the narrower groove required for these plywood panels. This kit gives you the flexibility to do either plywood panels or raised panels. Plus, it can be used on any Whiteside full size Stile and Rail bits that you may already own.