Drill bits Dedra WMT02557 — 2.5 mm diameter, 57 mm length, set of 10 for metal

Set of 10 Dedra WMT02557 drill bits with 2.5 mm diameter and 57 mm overall length, designed for drilling metal. These straight-shank twist drill bits are intended for general metalworking tasks such as drilling thin sheet metal, light fabrication parts and other similar metal components. The bits fit standard drill chucks and deliver consistent, repeatable holes when used at appropriate spindle speeds and with cutting fluid as needed.

Advantages

The set offers ten identical 2.5 mm metal drill bits for consistent hole size across multiple operations. The 57 mm overall length provides sufficient reach for most light to medium metalwork while keeping rigidity to reduce deflection. Compatible with standard chucks, the bits are convenient for both handheld and bench drills. Using cutting fluid and suitable speed ranges helps extend tool life and maintain drill point sharpness.

Suitable for

• Drilling thin sheet metal
• Light fabrication and prototype work
• Metal brackets and enclosures
• Repair and maintenance tasks on metal components

Key specifications

• Diameter: 2.5 mm
• Total length: 57 mm
• Material application: metal
• Quantity in set: 10 pieces
• Shank type: straight (suitable for standard chucks)

How to use

Select an appropriate spindle speed for 2.5 mm diameter drilling in metal—typically a higher RPM than for larger diameters—and secure the workpiece. Fit the drill bit in a properly tightened standard chuck, ensure correct alignment, and apply steady, moderate feed pressure. Use a cutting fluid or lubricant to reduce heat and prolong bit life, withdraw occasionally to clear chips, and finish the hole with a slow retract to reduce burrs. For handheld drilling, stabilize the tool and workpiece to avoid wandering and ensure perpendicular entry.

Usage recommendations

Maintain appropriate drilling speeds for small-diameter bits, use cutting fluid when working with metals, and replace bits once wear or chipping reduces accuracy. Store the set in a dry place and handle bits carefully to preserve tip geometry.