Drill Bit DeWALT DT8937-QZ

The DeWALT DT8937-QZ drill bit is a long SDS-plus rotary hammer bit with a 12 mm diameter and a length of 460 mm designed for drilling in concrete, masonry and similar materials. Manufactured by DeWALT, this single-piece bit combines a carbide tip profile with a durable shank to provide consistent drilling performance for medium- to heavy-duty applications. The 460 mm working length enables deeper holes without changing bits, while the SDS-plus connection ensures secure fitting and efficient power transfer from compatible rotary hammers.

Advantages

This DeWALT drill bit delivers precise hole positioning and extended service life due to its carbide-tipped cutting head and reinforced flute geometry. The SDS-plus shank design reduces play in the chuck and improves impact energy transmission, resulting in faster penetration rates in concrete and masonry. The 12 mm diameter is a common size for anchors and through-holes, and the 460 mm length allows work in thicker elements or deeper fixing positions without the need for extensions.

Suitable for

• Drilling holes for mechanical anchors and chemical anchors in concrete and reinforced concrete
• Through-holes in masonry walls and blockwork
• Installing plumbing and electrical conduits where deeper bores are required
• Renovation and repair tasks requiring precise, deep drilling in structural materials

Key specifications

• Diameter: 12 mm
• Total length: 460 mm
• Shank type: SDS-plus compatible
• Tip: carbide-tipped cutting head for concrete/masonry
• Intended tool: rotary hammer with SDS-plus chuck

How to use

Install the bit into an SDS-plus rotary hammer by aligning the shank and pushing until it locks. Select the rotary hammer mode appropriate for hammer drilling into concrete or masonry. Start drilling at low speed to establish the hole, then apply steady pressure and allow the tool's impact action to drive the carbide tip. Periodically withdraw the bit to clear dust from the hole and prevent clogging; for deep holes, remove debris more frequently. Maintain a straight drilling angle to avoid bit bending and ensure accurate hole diameter.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection and dust mask when drilling. Match drill diameter to anchor or conduit size, and verify that the selected rotary hammer provides sufficient power for 460 mm long drilling. For reinforcement bars or rebar contact, stop drilling and inspect the bit for damage; avoid forcing the bit through metal obstructions.