9PCS Countersink Drill Bit Set with Depth Stop Collar for Woodworking

About this item

• 【【TCT Alloy Cutter + M2 HSS Pilot Bit — Premium Material Upgrade】 Forged from TCT (Tungsten Carbide Tipped) cutter with M2 High-Speed Steel, this set offers exceptional hardness, wear resistance, and 5x longer service life than standard HSS bits. The pilot drill's helical flute design ensures fast and smooth cutting, while the sharp edges effortlessly create clean 82° countersink and counterbore holes, perfectly suited for flat-head screws.
• 【Precision Depth Control with Ball Bearing Stop Collar — Anti-Scratch Protection】 Both drilling and countersinking depths are independently adjustable. Equipped with an upgraded ball bearing stop collar that instantly stops rotation upon contact, preventing over-drilling and protecting workpiece surface from scratches and burn marks — cutting wood surface wear by up to 90% compared to traditional collars. Easily set your desired depth using the hex screws and depth control stops for precise, consistent results every time.
• 【Complete 5-Piece Professional Set with Storage Case】 This set includes 5 premium tapered pilot countersink drill bits in a range of sizes (3/16" x 1/2", 11/64" x 1/2", 9/64" x 3/8", 5/32" x 3/8", and 1/8" x 3/8".), offering a complete solution for everything from delicate to general countersinking tasks. All pieces come in a sturdy storage case with individual compartments to keep bits organized, protected, and easy to carry.
• 【Upgraded 2‑Flute Design for Cleaner Drilling】 Compared with 4‑flute countersink bits, our 2‑flute countersink bits have wider flute gullets for better chip evacuation, preventing clogging, burning and discoloration on wood, aluminum and plastic. Low cutting resistance ensures great performance with cordless hand drills for general‑purpose DIY work. Easier to resharpen for long‑term service life.
• 【Extensive Material Compatibility】 This versatile set is ideal for a wide range of materials, including natural wood, engineered wood, MDF, particle board, plywood, aluminum, non-ferrous metals, and various decorative materials, making it perfect for woodworking, renovation, and all kinds of DIY drilling projects.
• 【Pro Tip: Low Speed 200 RPM for Clean Edges】 For the cleanest, smoothest edges and optimal performance, we recommend operating the countersink at a slower speed (approximately 200 RPM). This technique delivers superior finish quality and extends the life of your drill bits.

Overview

• Material: High Speed Steel (HSS)
• Finish Type: Uncoated
• Shank Type: Hex
• Cutting Angle String: 82 degrees
• Brand: Csyibeielec