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Carbide Tipped Hole Saw Bits Carbide Oil Sprayed under Controlled Environment 12 Sizes included 19, 22, 28, 32, 38, 44, 51, 64, 76, 89, 102, 127 mm Rround Bits Made in IndiaTough hole saws for wood, plasterboard, plastic, PVC pipe, fiberglass, thin aluminum plate and non ferrous metals. Covers most popular hole saw sizes on the market. It's perfect to make any holes you need.High precision, smooth cutting edges, especially impact resistance, wear resistance, cutting depth 25 mm.16Pc Holesaw Kit Circle Wood / Timber Cutter Round Plaster Hole Saw 19-127mm. All the products in this kit are made of #50 premium carbon steel and processed with high frequency heat treatment. Suitable for drilling large holes on soft wood, timber, plasterboard etc., but can not be used to open the sheet metal and stone. 13 Size: 3/4", 7/8",1", 1-1/8", 1-1/4", 1-1/2", 1-3/4", 2", 2-1/2", 3", 3-1/2", 4", 5". Depth: 1". Arbors with 1 HSS pilot drill &1 Hexagon pilot drill & 2 Hexagon key.For clean drilling in hard and soft wood, veneered wood and coated chipboard panels. Comes with 2 adapters with 8 mm and 1/4" holder, as well as matching hex key. Carbon Steel, Heat Treated. The special gear design makes the hole more accurate. High speed steel teeth for fast and clean cuts. Suitable for normal wood,don't try it to hard material.It will happen broken.This product is used for general common hand drill , easy to operate. Hardened saw teeth are good for accurate and easy cut with the use of electric. After use, apply a small amount of anti-rust oil on the surface of the hole to avoid the natural oxidation, can increase its service life.