Includes porcelain and finish hole saw kits necessary to do a complete cut through porcelain and its metal backing.Complete Kits contains the following: Carbide-tipped Pilot Drill (PD-42) Spring-loaded Porcelain Hole Saw (P-14) Complete Finish Hole Saw (F-14) Additional Details ------------------------------ Product description: Includes porcelain and finish hole saw kits necessary to do a complete cut through porcelain and its metal backing.Complete Kits contains the following: Carbide-tipped Pilot Drill (PD-42) Spring-loaded Porcelain Hole Saw (P-14) Complete Finish Hole Saw (F-14)