Drill bits Dedra WMT04270 — 4.2 mm diameter, 75 mm length, set of 10, for metal

Set of 10 Dedra WMT04270 drill bits with a 4.2 mm diameter and 75 mm overall length, designed specifically for drilling metal. These high-precision bits create clean, consistent holes in steel and other metallic materials and are compatible with hand drills and drill presses used in workshops, fabrication, maintenance and repair tasks that require repeatable hole size and depth.

Advantages

Dedra 4.2 mm metal drill bits provide uniform performance across the set, ensuring consistent hole diameter and reduced wobble during drilling. The 75 mm overall length balances reach and stiffness for typical metalworking tasks. Supplied as a set of 10, the bits offer good value for routine workshop use and allow quick replacement when a tip becomes worn. The design and material selection aim to maintain cutting edge retention and deliver precise results when used at appropriate speeds for metal.

Suitable for

• Drilling holes in steel, iron and other ferrous and non-ferrous metals
• Work with hand-held drills and bench drill presses
• Metal fabrication, installation and light maintenance tasks
• Preparing holes for bolts, rivets or pilot holes for tapping

Key specifications

• Diameter: 4.2 mm
• Overall length: 75 mm
• Material compatibility: metal
• Quantity: 10 pieces per set

How to use

Secure the workpiece firmly and mark the drilling point. Use appropriate clamping to prevent movement and select the correct rotational speed for metal drilling. Fit the 4.2 mm bit into the drill chuck and tighten securely. Apply steady, moderate pressure and use cutting lubricant or cooling fluid when drilling thicker or harder metals to prolong bit life and improve hole quality. Withdraw the bit occasionally to clear chips and avoid overheating.

Usage recommendations

For best results, start with a lower drill speed for harder metals and increase speed for softer alloys. Always wear eye protection and gloves, and use cutting fluid on steel to reduce heat and extend bit life. Replace worn bits to maintain hole accuracy and reduce the risk of workpiece damage.