Drill bit Dedra WM08511, 8.5 mm diameter, 117 mm length, for metal, 1 pc

Dedra WM08511 drill bit, 8.5 mm diameter and 117 mm overall length, is designed for drilling through metal. The single-piece twist-flute geometry provides effective chip evacuation and straight, stable drilling performance in hand drills and drill presses. This metal-specific bit is suitable for maintenance, repair and metalworking tasks where a medium-size hole is required.

Advantages

The twist-flute design ensures efficient removal of metal chips, reducing heat buildup and helping to maintain cutting geometry during extended use. With a length of 117 mm, the bit reaches deeper workpieces while keeping rigidity for accurate holes. The 8.5 mm diameter gives a commonly used hole size for fasteners and pass-through applications in steel and other ferrous materials. Supplied as a single piece, the bit is ready for immediate use and compatible with standard drill chucks.

Suitable for

• Drilling holes in steel sheets and metal plates
• Maintenance and repair of machinery and equipment
• Workshop and fabrication tasks requiring 8.5 mm holes
• Use with hand drills and drill presses

Key specifications

• Diameter: 8.5 mm
• Overall length: 117 mm
• Geometry: twist-flute for chip evacuation
• Intended material: metal
• Quantity: 1 piece

How to use

Secure the drill bit in a compatible drill chuck and tighten to prevent slipping. Mark and center-punch the drilling location on the metal surface to improve accuracy. Use appropriate cutting speed, steady feed pressure and, if needed, cutting fluid to reduce heat and extend tool life. For deeper holes, periodically withdraw the bit to clear chips and allow cooling. After use, clean and store the bit in a dry location to prevent corrosion.

Usage recommendations

Operate the drill at recommended speeds for the specific metal being drilled; lower speeds for harder steels and higher speeds for softer materials. Apply cutting fluid when drilling thicker or harder metals and avoid excessive lateral force to maintain hole accuracy and prolong bit life.