ADJUSTABLE DEPTH CONTROL: Elevate your woodworking game with the BURTOK Depth Adjustable Countersink Drill Bit. Ideal for wood, plastic, and counterbore, adjust depths effortlessly with a wrench for flawless results. DURABLE & SHARPNESS TUNGSTEN CARBIDE： The BURTOK Countersink Drill Bit features durable tungsten carbide construction for sharpness and longevity. Its well-designed chip removal structure minimizes cleanup, significantly improving work efficiency for precise woodworking tasks. 1/4'' HEX SHANK FOR QUICK CHANGE: Designed with a 1/4-inch hex shank, allowing for rapid and effortless bit changes. Ensures secure attachment with no wobbling, ideal for seamless transitions between tasks. REPLACEABLE BLADE AND DRILL BIT: Both the blade and drill bit are replaceable, ensuring your tool stays in top condition. The included retaining ring and allen wrench make swapping parts a breeze. VERSATILE MATERIAL COMPATIBILITY: This counter sink drill bit is your go-to for flawless cuts through MDF, plywood, chipboard, and drywall. Just a heads-up, it's not your metal-worker. Perfect for nailing down quality and accuracy in your woodworking gigs—your toolkit's new best friend!