·【Upgraded Professional Set】The countersink drill bit set includes all the accessories you need for woodworking and assembly work, including 6 tapered drill bits: 2 #4 (7/64"), #6 (9/64"), #8 (11/64"), #10 (3/16"), and #12 (7/32"), 2 wood plug cutters (3/8" and 1/2"), 1 hex wrench, 2 depth stop rings (3/8" and 1/2"), 7 screwdriver bits (slotted, philips, square, and torx), and 1 extendable magnetic bit holder.

·【Nitride-treated HSS】Our counter sink drill bit for wood is made of industrial-grade high-speed steel with a nitrided surface treatment to prevent rust. This treatment improves the countersink bit’s hardness, wear resistance, toughness, and overall performance, extending its service life by up to 2 times that of ordinary carbon steel wood drill bits.

·【Efficient All-in-One Design】Conical drill bit, four-edged chamfer and wood plug cutter ensure fast and smooth drilling in both hardwood and softwood, enhancing cutting and chip removal efficiency. Our wood drill bit set allows for drilling, chamfering (82°angle), countersinking, and and creating tapered plugs in one step, meeting your diverse work needs.

·【Precise Depth Control】Our countersink bit features an adjustable depth stop ring for precise control of pilot hole depth, ensuring consistent, accurate countersinking. #4, #6, #8, and #10 drill bits correspond to countersinks with a diameter of 3/8", while a #12 drill bit corresponds to 1/2".

·【Wide Application】Our woodworking tools set is suitable for hand, bench, and power drills, making it an ideal choice for a variety of woodworking projects, including cabinetry and furniture making, and a must-have for any woodworking enthusiast. Note: For optimal cutting results, it is recommended to use wood plug cutters on a bench drill.