Drill bit DeWalt DT9544 for rotary hammer, Ø10 mm, length 350 mm, 1 pc

DeWalt DT9544 is a 10 mm diameter, 350 mm long drill bit engineered for use with rotary hammers to drill into masonry and concrete. This solid-shank bit is designed to be compatible with SDS-plus style chucks and provides the reach needed for deep or through holes in hard substrates. Supplied as a single piece, the bit is suitable for both professional construction tasks and serious DIY projects that require reliable performance when hammer drilling.

Advantages

The drill bit offers a hardened carbide tip and a robust shank that resist wear when used in rotary hammer drilling. Its long 350 mm length enables reaching deeper drilling points without extensions, and the 10 mm diameter is a common size for anchor and fixings holes. The design focuses on efficient dust removal during drilling and stable centring to reduce bit walking, which supports accurate hole placement in concrete and masonry.

Suitable for

• Drilling through concrete walls and floors
• Creating holes for anchors, dowels and fixings
• Installing electrical conduits and plumbing sleeves
• Renovation and structural retrofit work requiring deep holes

Key specifications

• Diameter: 10 mm
• Overall length: 350 mm
• Shank type: solid shank compatible with rotary hammer/SDS-plus style chucks
• Tip material: carbide-tipped for masonry and concrete
• Intended material: concrete, masonry and similar hard substrates

How to use

Fit the drill bit securely into the rotary hammer chuck according to the tool manufacturer's instructions. Select the hammer drilling mode and apply steady forward pressure while allowing the tool to do the work; avoid excessive side load on the bit. For deep holes, periodically withdraw the bit to clear dust and debris and to reduce heat build-up. Use appropriate personal protective equipment, including eye protection, hearing protection and a dust mask or extraction when drilling in enclosed spaces.

Usage recommendations

For best results, match drilling speed and feed pressure to the substrate hardness, keep the bit straight for precise holes, and replace the bit when cutting performance decreases significantly. When installing anchors, confirm hole depth and diameter before insertion to ensure a secure fit.