Professional Countersink Drill Bit – Trade-Grade Countersink Tool | NZ Stock

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Achieve clean, flush screw finishes every time with this trade-grade countersink drill bit, engineered for builders, joiners, and serious DIYers. Built from heat-treated steel for durability and precision, this countersink delivers consistent results with less tear-out and fewer tool changes. ✔ Professional Finish, Every TimeCreates clean, flush screw heads for a high-quality, finished look. ✔ Faster Work On SiteDrill and countersink in one smooth operation — fewer tool changes, less downtime. ✔ Built for Trade UseManufactured from hardened, heat-treated steel for long life under repeated use. ✔ Cleaner Cuts, Less Tear-OutDouble-fluted design ensures smooth cutting and consistent depth control. ✔ Reliable NZ SupplyIn-stock and shipped fast from a trusted New Zealand supplier. 🔹 IDEAL FOR Builders & construction professionals Joiners & cabinet makers Woodworkers & furniture makers Renovators & serious DIY users Perfect for timber, MDF, and general woodworking applications. 🔹 PRODUCT FEATURES & SPECIFICATIONS Material: Heat-treated steel Cutting Angle: 45° countersink Design: Double-fluted for smooth, controlled cutting Application: Drilling and countersinking in a single operation Finish: Clean, flush screw seating Sizes Available: Multiple sizes available (select your required size) Countersink Matching Drill K14 1/4" (6.35mm) K12 7/32" (5.55mm) K10 (5.00mm) K9 3/16" (4.75mm) K8 11/64" (4.3mm) K7 5/32" (4.00mm) K6 9/64" (3.60mm) (K number relates to corresponding gauge screw i.e. K14 cutter is for 14-gauge screws) 🔹 WHY CHOOSE KIWI AS BUILDING BITS? Unlike generic hardware-store bits, our countersinks are purpose-built for performance and longevity. Trusted by trades and serious DIYers, we focus on quality tools that last, backed by reliable NZ service and fast delivery. 🔹 SIZE SELECTION HELP Not sure which size you need? Smaller sizes → fine screws & detail work Larger sizes → decking, framing & structural fixings 👉 Check out our other countersink sizes to match your application. 🔹 TRUST & CONFIDENCE BOOSTER ⭐ Trade-Grade Quality⭐ Fast NZ Shipping⭐ Trusted Specialist Tool Supplier Show more