Versa Tool SB-K18 12 PC Universal Oscillating Saw Blade Set for Fein Multimaster, Rockwell, Sonicrafter, Makita Oscillating Tools (SB3A,3B,3C,1O,1L,1K).Type A:The 45mm Standard ‘E’ Cut HCS saw blade is Ideal for flush cuts and cut-outs in hard, nonmetallic materials such as hardwoods, plywood and particle board this wood blade can also tackle materials such as plastics, fiberglass and Plexiglas. The Versa-Tool HCS blade is manufactured with a durable 19 TPI cutting edge that resists wear and cuts quickly.Type B:The 45mm Bi-Metal Saw Blade is Ideal for demolition, plumbing, remodeling and general wood and metal cutting. The Versa-Tool Bi-Metal oscillating saw blade cuts nail embedded wood, fiberglass, tubing, PVC, copper Pipe, metal mesh, sheet metal and other metallic and non-metallic materials.Type C:The 45mm Japan tooth saw blade is Ideal for flush cuts and cut-outs for switches, outlets, hardwood floors, base boards, trim and molding. The Versa-Tool Japan tooth blade will saw into corners and cut angles with precision. With sharp teeth, the precision blade cuts through laminated material without chipping and the large tooth design resists loading and improves cutting speeds. Plunge cut drywall for countless tasks such as installation of recessed lighting and ceiling fans.