WALNUT CUTTERS: Steel taper drill bits are used for drilling holes in wood or other hardwood floors and are suitable for bench drill bits, impact drill bits, chuck drill bits, etc. This is a must have item for everyday woodworking. STURDY AND DURABLE: Our wood drill bits are made of HSS steel with high hardness, good wear resistance and high heat resistance. The drill bit is ideal for drilling holes in wood, plastic, rubber, PVC and other materials. is not a power tool and cannot be used for hard objects such as steel, iron and stone. ADJUSTABLE LENGTH: The HSS taper drill bit kit includes an adjustable hex socket that can be adjusted by loosening and tightening the screws with a hex key. It can also be used to quickly remove accessories. RAPID CHIP VENTILATION: The Hex Countersink Countersink features a chip flute and three-sided beveling machine that quickly discharges wood chips for a smooth surface on any type of hardwood. VARIOUS TYPES OF DRILL BITS: We have four sizes of woodworking drill bit with countersink, 6 , 10 , 13 , 16 . Model 6 fits drill size 2.35mm, model 10 fits 2.5mm, model 13 fits 2.9mm, model 16 fits 4mm and is equipped a 5.5*2cm hex wrench. It's enough for your daily needs. Product Description Features： Steel taper drill bits are used for drilling holes in wood or other hardwood floors and are suitable for bench drill bits, impact drill bits, chuck drill bits, etc. It is an indispensable item for the work of the daily wood. Our wood drill bits are made of HSS steel with high hardness, good wear resistance and high heat resistance. The HSS taper drill bit kit includes an adjustable hex socket that can be adjusted by loosening and tightening screws with a hex wrench. Product Information： Material: Drill bit--4241 high speed steel, black chamfer--45 steel Drill Size: 6 ：2.35mm，10 ：2.5mm，13 ：2.9mm，16 ：4mm Hex Wrench Size: 5.5*2cm Weight: 80g Specification: 6 ，10 ，13 ，16 Package Contents: 4 Packs x Steel Taper Drill Bits ( 6 ，10 ，13 ，16 ) 1 Pack x Hex Wrench Service Guarantee： If you have any questions, you can contact us at any time. We will respond to your email within 24 hours.