The countersink drill bit set is convenient and practical, with excellent texture, and without being easily damaged. The craftsmanship can serve you well without breaking easily. This is a very practical countersink drill bit set. Features -Color:Assorted Color -Material:High-speed steel, aluminum alloy, sponge -Size:5.70X1.90X1.90cm,5.70X1.50X1.50cm,5.70X1.20X1.20cm,5.70X0.95X0.95cm,5.70X0.63X0.63cm/2.24X0.75X0.75in,2.24X0.59X0.59in,2.24X0.47X0.47in,2.24X0.37X0.37in,2.24X0.25X0.25in - Chips can discharge from both sides, not easy to get stuck during use. - The simple design will ensure its high performance as an excellent countersink drill bits accessory. - Suitable for woodworking openings, wood stopper processing. This set can be in the bench drill and other professional equipment to use. - Excellent craft, carefully down to every detail to give it and beautiful look. - Outstanding workmanship, reasonable design, stable and practical, will bring you a . Package list: 1 x 3/4 inch countersink drill bit 1 x 5/8 inch countersink drill bit 1 x 1/2 inch countersink drill bit 1 x 3/8 inch countersink drill bit 1 x 1/4 inch countersink drill bit