Drill bits Dedra WMT08511 — 5 pcs, 8.5 mm diameter, 117 mm length, for metal

Set of five Dedra WMT08511 drill bits, each with an 8.5 mm cutting diameter and 117 mm overall length, designed for drilling metal. These solid drill bits are supplied in a pack of five identical pieces for repeated or multi-point work with compatible electric drills and drill presses. The geometry and length are intended for general-purpose metalworking tasks such as creating through-holes or pilot holes in steel, iron and other common ferrous and non-ferrous metals in workshop and repair environments.

Advantages

The set provides consistent diameter and length across all five bits, allowing uniform hole sizes and straightforward replacement on the job. The 8.5 mm size covers a common range of fastening and assembly needs, while the 117 mm length offers extra reach for thicker workpieces or clamped assemblies. Supplied as a set of five, the pack reduces downtime by providing spare bits for repeated drilling tasks.

Suitable for

• Drilling holes in steel and iron sheets, plates and profiles
• Creating pilot or clearance holes for bolts and fasteners
• Workshop repair and maintenance tasks on metal components
• Use with handheld drills and drill presses for general metalworking

Key specifications

• Drill diameter: 8.5 mm
• Overall length: 117 mm
• Material application: metal (ferrous and non-ferrous)
• Quantity in pack: 5 pieces

How to use

Select an appropriate drill speed and coolant for the metal type to be drilled. Secure the workpiece firmly and mark the drill point. Fit a single 8.5 mm Dedra bit into the drill chuck and tighten securely. Start drilling at low speed to establish the center, then increase speed as appropriate while applying steady, even feed pressure. For thicker or harder metals, use cutting fluid or coolant and periodically withdraw the bit to clear chips. Replace bits from the pack as they wear to maintain hole quality.

Usage recommendations

Use appropriate personal protective equipment (safety glasses, gloves) and ensure the drill and chuck are compatible with an 8.5 mm shank. For best tool life and hole finish, apply cutting fluid when drilling steel and avoid excessive feed force or speed. Store the bits dry and clean to prevent corrosion.