Description WOOD COUNTERSINK BITS: The steel countersink drill bits are used for drilling holes in wood or other hardwood floors and are suitable for bench drills, impact drills, chuck drills, etc. It is a must-have item for daily woodworking. STURDY AND DURABLE: Our wood drill bits are made of HSS steel with high strength, good wear resistance and high heat resistance. The drill bit is ideal for drilling holes in wood, plastic, rubber, PVC and other materials. It is not a power tool and cannot be used for hard objects such as steel, iron and stone. ADJUSTABLE LENGTH: The high speed steel countersink drill bit kit includes a hex socket that can be adjusted by loosening and tightening the screws with a hex wrench. It can also be used to quickly remove accessories. DIFFERENT TYPES OF DRILL BITS: We have four sizes of wood drill bits with countersink, 6#, 10#, 13#, 16#. The 6# model corresponds to a drill size of 2.35mm, the 10# model to 2.5mm, the 13# model to 2.9mm, the 16# model to 4mm and is equipped with a 5.5*2cm hex wrench. Product Information: Material: Drill--4241 High Speed Steel, Black Chamfer--45# Steel Drill Size: 6#: 2.35mm, 10#: 2.5mm, 13#: 2.9mm, 16#: 4mm Specification: 6#, 10#, 13#, 16# Package Contents: 4 Packs x Steel Cone Drills (6#,10#,13#,16#) 1 Pack x Hex Wrench Welcome to meet