Drill bit DeWalt DT8925 for rotary hammer, 8 mm diameter, 260 mm length, single piece

DeWalt DT8925 drill bit for rotary hammer is a single-piece masonry bit designed for drilling in concrete, brick and similar construction materials. With an 8 mm diameter and 260 mm overall length, this SDS-plus-compatible bit provides extended reach for through-drilling and deeper anchoring tasks. The solid carbide tip with four cutting faces and a four-flute helix is engineered to improve debris extraction, reduce vibration and resist jamming when encountering rebar.

Advantages

The single-piece construction increases durability under the high-impact action of rotary hammers, while the carbide tip maintains cutting performance over repeated use. The four cutting faces reduce chatter and help the bit stay centered in the hole. The four-flute spiral clears dust effectively, allowing faster penetration rates and more consistent drilling in hard concrete and masonry. SDS-plus shank ensures secure connection to compatible rotary hammers for reliable power transfer.

Suitable for

• Drilling holes in concrete for anchors and plugs
• Through-drilling brick and masonry walls
• Preparing holes for rebar placement or inspection (light rebar contact resistance)
• Extended-reach drilling where a longer 8 mm bit is required

Key specifications

• Diameter: 8 mm
• Overall length: 260 mm
• Shank type: SDS-plus compatible
• Tip material: solid carbide with four cutting faces
• Flute design: four-flute helix for improved debris removal
• Construction: single-piece masonry drill bit

How to use

Install the DeWalt DT8925 into an SDS-plus rotary hammer according to the tool manufacturer's instructions until it locks into place. Select hammer-drill mode for reinforced concrete or rotary-only mode for softer masonry. Start drilling at low speed to establish position, then apply steady pressure while allowing the hammer action to advance the bit. Periodically withdraw the bit to clear debris when drilling deep holes. Replace the bit when cutting performance noticeably decreases or when the carbide tip shows wear.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask. Match drill speed and hammer setting to the material hardness, and avoid excessive side load to prolong bit life. For extended continuous drilling, allow occasional cooling pauses to maintain carbide tip integrity.