Drill Bit Set with Countersink Wolfcraft Nawiertak 4.5–16 mm for Metal and Wood

Wolfcraft Nawiertak 4.5–16 mm is a drill bit set with integrated countersink designed for precise hole making and chamfering in metal and wood. The set combines drilling and deburring in a single operation, covering a range of hole diameters from 4.5 to 16 mm to suit common fastening and assembly tasks. Intended for workshop and construction use, the tool reduces the need for separate countersinking operations and helps maintain consistent hole geometry.

Advantages

The integrated countersink and stepped drill geometry allow clean holes and matched chamfers in one pass, reducing tool changes and saving time. Hardened cutting edges and a design suitable for both metal and wood provide versatility across materials. The stepped range of diameters ensures compatibility with a variety of fasteners and simplifies sizing choices for through-holes and pilot holes.

Suitable for

• Drilling and countersinking holes for screws and bolts in wood
• Creating drilled and chamfered holes in non-hardened metals and sheet metal
• Workshop assembly and general repair tasks
• Preparation of holes for fittings and mechanical fastenings

Key specifications

• Drill diameter range: 4.5–16 mm
• Integrated countersink for chamfering
• Suitable materials: wood and metal
• Stepped/stacked cutting sizes to cover multiple hole diameters
• Shank type: standard drill shank for use in drills and drivers

How to use

Secure the workpiece and select the appropriate diameter on the stepped drill bit for the required hole size. Mount the bit in a drill chuck and set the drill to an appropriate speed for the material: lower speeds for metal and higher speeds for wood. Apply consistent axial pressure and drill through until the integrated countersink forms the desired chamfer. Withdraw the bit while running briefly to clear chips, then inspect the hole and chamfer for fit with the intended fastener.

Usage recommendations

Use cutting lubricant or coolant when drilling in metal to extend tool life and improve edge quality. For best results in wood, ensure the workpiece is clamped and avoid excessive feed pressure. Inspect the bit for wear before use and replace when cutting performance or chamfer quality degrades.