Adjustable Depth Two-Flute Countersink Drill Bit Set Alloy Countersink Drill Step Drill Bit for Concealed Screws FEATURES Aluminum Upgraded Limit Ring Stops upon board contact, reduces friction. The newly upgraded countersink drill features a limit ring/body made of aluminum alloy. During use, the limit ring stops immediately upon contacting the wood. Cutter Head Wear-Resistant & High-Temperature Resistant The cutter head is made of high-quality 6542 steel, featuring high hardness, corrosion resistance, rust prevention, and high-temperature resistance. Adjustable with Scale Precise Countersink Limiting Fixed with hexagon socket screw card slot, adjustable as needed. Laser engraved, clear and wear-resistant, for more precise countersinking. Quick Positioning for Drilling Multiple Diameter Options Fixed with hexagon socket screw card slot, adjustable as needed. Laser engraved, clear and wear-resistant, for more precise countersinking. Wide Range of Applications Effectively prevents chip accumulation, high-speed operation for quick chip removal, improving efficiency. Suitable for pine, beech, walnut, ash and other woods. SPECIFICATIONS Material: Premium Aluminum Alloy + 6542 Steel Countersink Diameter: 2.8 ~ 4.0mm Center Drill Diameter Range: 3.2-4.8mm Total Length: 65mm Adjustable Length: 24mm Compatible Models: Hand Drill / Drill Driver / Drill Press PACKAGE INCLUDES 1 × Two-Flute Bearing Type Countersink Drill 4-Piece Set NOTE The center drill should not be adjusted too long, otherwise it may wobble and cause the drill core to break. Please operate under professional guidance to ensure safety. Wear protective glasses during use. Avoid using on wood containing metal, nails or other hard objects. 🎁Best gift for family or friends ⚡️Stock sells fast - get yours today Click On 'Add To Cart' To Get Yours Now! Certification 💐WHY US❓ We work directly with manufacturers all over the world to ensure the best quality of our products. We have a Quality Control department which helps us to keep our promise! 🔥Price is always competitive. 😊Awesome Customer Service. 🏆Amazing products along with High Quality. 🍭Read reviews from our lovely customers. 🌎Worldwide Shipping✈ Please note that shipping is insured. However, you may receive your items earlier. Tracking Numbers will ALWAYS be sent so you can track it every step of the way! Cool things are worth waiting for! 😉 🏭 Our Warehouse We will ship from the warehouse closest to you. We're proud to offer worldwide shipping