Excellent QualityOur hole cutters set is made of high cemented carbide steel with central axis, which has stable mechanical properties, high wear resistance and high impact resistance,ensuring a long life. Cutting DesignThe hole cutters set for wood with the non-binding clean edge design, this hole saw cuts smooth and easy. And the spring on the drill bit would automatically pushes the disc out of the saw immediately after completing the hole. Easy Chip RemovalNewly designed chip removal groove, holesaws sets can discharge the chip rapidly,improved the speed of removing the cylindrical iron filings in the hole and will not cause the crack and stuck piece phenomenon. Efficient and PreciseThe increased hardness of the carbide technology and optimized tooth geometry help our hole cutters to provide faster cutting speed and more accurate than standard hole saws cutting everything from wood and plastics to aluminum, steel, cast iron, and stainless steel. Easy to UseGently insert the drill bit until the hole saw drill bit wears the wood surface. When the saw starts to cut, slowly cut it into the teeth without pushing. After the hole saw passes through the other side of the wood, stop the drill. Delivery Quantity: 1pc, Package Contents: Only the above package contents, excluding other products. Size: 45mm in diameter (Reminder: The size is measured manually, please allow 1-2 cm measurement error) color: red (Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)