PERFECT COMBINATION:Countersink drill bit set includes 5 different sizes to satisfy you all demand.ELABORATE DESIGN:Countersink drill bit set is quick change compatible and has an adjustable counter sleeve depth with Allen wrench.MULTIPURPOSE:Countersink drill bit set perfect for wooden planks, plastic, soft metals, fiber board, particle board, plywood, alumiumn board etc.HIGH QUALITY:Countersink drill bit set is made by high speed steel and easy to use. Our drill have higher accuracy than the ordinary.GOOD PERFORMANCE:The countersink drill bit set have self-starting point and five-fluted design eliminates chatter and vibration for smooth operation to make clean, accurate and burr-free cuts.Delivery Quantity: 1setof 5 pcs,Package Contents: Only the above package contents, excluding other products.Size: 5, 6, 8, 10, 12(Reminder: The size is measured manually, please allow 1-2 cm measurement error)Colour: Black(Due to different monitors and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.)