Drill bit DeWalt DT8908 – 5 mm diameter, 160 mm length, single piece

DeWalt DT8908 drill bit — 5 mm diameter and 160 mm total length — is a single-piece bit intended for standard drilling tasks in construction and DIY. The bit combines a solid carbide tip with a multi-flute helix to improve cutting performance and debris evacuation. It is designed for use in handheld and stationary drills to produce precise 5 mm holes in masonry and concrete when this diameter and length are required.

Advantages

The solid carbide tip with four cutting faces reduces vibration and helps prevent jamming when encountering reinforced concrete. The four-flute helix design improves dust and rubble removal for faster drilling progress and reduced heat build-up. Its 160 mm total length gives access to deeper drilling points while the 5 mm diameter ensures compatibility with standard fasteners and anchors. Supplied as a single piece, the bit is lightweight and easy to handle for repetitive tasks.

Suitable for

• Drilling 5 mm holes in concrete and masonry
• Installing small anchors, dowels and screws in solid substrates
• Handheld and bench drill use where 160 mm length is required
• General-purpose construction and renovation drilling tasks

Key specifications

• Diameter: 5 mm
• Total length: 160 mm
• Tip material: solid carbide with four cutting faces
• Flute design: four-flute helix for improved debris removal
• Quantity: single piece
• Weight: approximately 20 g

How to use

Install the drill bit securely in the chuck of a handheld or stationary drill, ensuring correct alignment and tight clamping. Select the appropriate drill speed for masonry or concrete and apply steady, moderate pressure without forcing the bit. Periodically withdraw the bit to clear debris and prevent overheating. When drilling through reinforced sections, maintain control to avoid sudden snagging and allow the carbide tip to cut through rebar with reduced vibration.

Usage recommendations

Use personal protective equipment including eye protection, dust mask and hearing protection when drilling masonry or concrete. Match drill speed and feed pressure to the substrate hardness, and replace the bit if wear reduces cutting performance or accuracy.