Designed for drilling abrasive materials when drilling accuracy must be maintained. Carefully crafted, with excellent convenience and accuracy, and will be good replacement accessories for drilling. The bit can quickly and accurately drill a smooth . Better in centering and no skid. Features -Color: As Shown. -Material: Steel. -Size: About 12.00X2.00X2.00cm/4.72X0.79X0.79in. - Bit Specification Size: 10/8/7/6/5/4/3/3mm. -Plug Specification Size: 6/10/13/16mm. - It is made of selected steel material, durable and safe, excellent and simple, serving for long time. - The simple design will ensure its high performance as an excellent countersink drill bits accessory. - Creates for screw to prevent wood from splitting. And plug set makes perfect plugs for counter-bored holes - It has a wide of application. Perfect for wood, particleboard, plywood, fiberboard, plastic, PVC, rubber, etc. - Perfect for woodworking openings, wood stopper processing. Can be in the bench drill and other professional equipment to use. Package list: 8 x bits 8 x plug cutters 1 x wrench