Amzz 23Pcs Bi-Metal Hole Saw Kit - Heavy Duty M42 Hss Cutter Set (3/4" To 3") ? High-Quality Material?High Speed Steel (HSS) Bi-metal heavy duty steel hole saw set was built tough for repeat use, 2mm thick, much more durable and can offer a longer life; Great heat resistance and anti-abrasive. It?s durable and reliable to use on workpieces like metal, wood, PVC board, plastic, and drywall; ?23 pcs Hole Saw Set for Multi-Purpose?The Bi-Metal hole saw kit Includes 13 hole saws: 3/4?(19mm), 25/32?(20mm), 7/8?(22mm), 1?(25mm), 1-1/8"(29mm), 1-1/4?(32mm), 1-3/8?(35mm), 1-1/2?(38mm), 1-3/4"(44mm), 2?(51mm), 2-1/4?(57mm), 2-1/2?(64mm), 3?(76mm) for needs in different situations, 4 x 1/4?Spare Pilot Drill for replacement, 1 x Large Mandrel ?7/16??, 1 x Small Mandrel (3/8?) with Medium Adapter and 1 x Plastic Case for easy storage (together with 2 bonus hex key) ?Efficient Smooth Cutting?Non-binding clean edge design makes the hole saw blade cuts smooth and fast. cutting depth varies from 32mm to 40 mm according to different sizes. Compatible machines: electric drill, impact drill, bench drill, etc. ?Easy to Use?Different mandrels for saws of different sizes, compatible with most drills of other manufacturers; Set includes the hole saw kit holder with size index for easy storage and organizing. ?Wide Appliacations?The 23 pcs Hole Saw Set covers the most popular hole saw sizes on the market, Sharp teeth perfect for hole cutting on metal, wood, PVC board, acrylic-board, plastic, and drywall Not fit marble, glass, or hardwoods like through oak. ?FEATURES?High wear resistance, sharp cutter head, efficient and accurate hole opening, excellent workmanship