【Upgraded Professional Set】The countersink drill bit set includes all the accessories you need for woodworking and assembly work, including 7pcs Tapered drill bits: 2pcs #4 (7/64"), 2pcs #6 (9/64"), #8 (11/64"), #10 (3/16"), #12 (7/32"). 2pcs Wood plug cutters (3/8" and 1/2"). 1pc Allen key. 2pcs Depth stop rings. 5pcs Phillips screwdriver bits (PH1, 1.95 inPH2*3, 2.95 in PH2). 1pc Extension bit shaft.
【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.
【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".
【Efficient Drilling, Flawless Finish】Our drill bit's sharp cutters and 82-degree counterbore angle ensure smooth, rapid drilling in hard and soft woods. Tapered pilot bits deliver fast, clean pilot holes for a snug screw fit. All-in-one drilling, countersinking, and counterboring maximize efficiency.
【Versatile & Compatible】Ideal for various woodworking projects such as cabinetry and furniture making, this counter sinker drill bit set are suitable for hand drills, bench drills, electric drills. Note: For optimal cutting results, it is recommended to use the wood plug cutter on a bench drill.