Bestgle 5pcs HSS Countersink Drill Bit Set, 8mm Shank Chamfer Hole Cutter for Wood, Plastic & Soft Metal, Adjustable Screw Length (2.8/3/3.2/3.5/4mm)

• High-Speed Steel Countersink Drill Bits – Made from tungsten steel alloy, offering superior hardness, fast cutting speed, and strong force for efficient woodworking and plastic drilling.
• Adjustable Counterbore Depth Control – Includes a hex key to adjust the counterbore hole length, allowing precise drilling for screws of various lengths without changing bits.
• Efficient Chip Removal Design – Engineered for smooth countersinking, these bits offer fast chip evacuation and reduce the need for frequent bit changes during repetitive drilling.
• Multi-Purpose Chamfer Drill Bit Set – Suitable for wood, plastic, soft metal, fiberboard, and more; ideal for DIY projects, furniture making, and cabinetry installation.
• Wide Tool Compatibility & Use Tips – Compatible with drilling rigs, bench drills, hand drills, and cordless drills; for best results, drill vertically to prevent bending or breakage.

Features: The drill bit made of steel alloy, more hardness, provide fast cutting and strong force. Countersink Drill Bit is adjustable to counter sleeve depth with the wrench. Suitable for wooden planks, plywood, aluminum board, fiberboard, particleboard, plastic, PVC board and other various soft material chamfers. Specifications: Material: Tungsten Steel Alloy Shank: 8mm Cutter Head Dia.: 2.8/3/3.2/3.5/4mm Function: screw countersunk hole Package Included: 5 x HSS Countersink Drill Bit 5 x Hex Key