EZARC Countersink Drill Bit Set, 22 PCS Counter Sink with 2 Wood Plug Cutters, Magnetic Extension Holder, 1/4" Hex Shank for Woodworking Storage Box

【Complete 22-Piece Set】EZARC countersink drill bit set includes 5pcs flat head countersink drill bits (#4, #6, #8, #10, #12), 6pcs replaceable HSS drill bits, 2pcs wood plug cutters (9.5mm, 12.7mm), 7pcs S2 screwdriver bits, 1pc magnetic extension bit holder, 1pc hex wrench, all neatly packed in a durable storage case. 【Dual-Flute Flat Head】Featuring a two-flute cutting edge, these countersink drill bits ensure smoother cutting, reduced vibration, and faster drilling compared to single-flute designs, delivering a precise and clean finish on wood. 【Nitride-treated HSS】Crafted from premium HSS 4341 with a nitrided surface treatment, the drill bits offer higher hardness, wear resistance, and extended tool life. Suitable for both softwood and hardwood (NOT RECOMMENDED FOR PROLONGED USE ON HARDWOOD). 【All-in-One Drilling Solution】Perform drilling, countersinking (82°), and counterboring in a single step. Adjustable drilling depth provides flexibility for different woodworking tasks, while the stepped chamfer blade reduces cutting resistance for higher efficiency. 【Versatile & Convenient】Equipped with a 1/4" hex shank for compatibility with hand drills, electric drills, and bench drills.The extendable magnetic bit holder provides extra reach and stability when driving screws.