Migiwata 2-in-1 Metric Straight Shank Countersink Drill Bits with HSS Drill Bits and Steel 45 Chamfers Set of 7pcs for Screw Countersinking in Woodworking Project

In many cases of woodworking projects, it's vital for appearance, safety and everyday use that the screw heads be perfectly level with, or even below, the surface of the lumber. The solution for these kinds of projects is to countersink your screws. In the old way of countersinking, you need to select a drill bit that is the same diameter as the shafts of your screws, and a second drill bit that is the same diameter as the heads of your screws. It's also tricky to control the depth of the holes. With this Migiwata 2-in-1 countersink drill bits set, the job will be quite easy. One bit can finish drilling and countersinking for wood screws. Drilling depth can be adjusted for various screws simply by loosening and tightening the setscrew with an Allen wrench. Nice to have and good to use. Specification: Drill Bit Material: High Speed Steel Black Chamfer Drill Body Material: Steel 45 Diameter of Chamfer: 15.8mm and 18.8mm Shank: Straight Shank Length: 60mm, 75mm, 85mm, 93mm, 100mm, 110mm, 120mm What you'll get: 2-in-1 Countersink Drill Bit with a 3mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 4mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 5mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 6mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 7mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 8mm Bit and a 15.8mm Chamfer x 1pc 2-in-1 Countersink Drill Bit with a 10mm Bit and a 18.8mm Chamfer x 1pc Allen Wrench x 1pc Warranty : Within 90 days product quality is not completely satisfied, please CONTACT US, 100% refund.