Drill bit DeWalt DT9645-QZ, length 210 mm, single piece

DeWalt DT9645-QZ drill bit, 210 mm length, single piece — a long straight bit designed to provide extended reach for drilling through-holes and deep holes in a range of building materials. The bit is compatible with standard drill chucks and is intended for applications that require a straight, rigid shank and an optimized carbide tip for reliable cutting performance. The 2-flute helix supports efficient dust removal during penetration of masonry and other dense substrates.

Advantages

The DeWalt DT9645-QZ combines a 210 mm overall length with a precision-formed carbide tip featuring two cutting edges for faster bite and improved centring. Its 2-flute helix geometry is engineered to evacuate dust and debris effectively, reducing friction and helping maintain drilling speed in masonry, concrete and brick. Supplied as a single piece, the bit fits standard drill chucks without the need for adapters and provides straightness and stability for deep drilling tasks.

Suitable for

• Drilling plug, anchor and clearance holes in masonry, concrete, brick and block work
• Deep through-holes where extended bit length is required
• General construction and renovation work requiring long straight drill bits
• Applications on stone and similar dense substrates

Key specifications

• Overall length: 210 mm
• Tip material: carbide tip with two cutting edges
• Flute design: 2-flute helix for dust evacuation
• Shank: straight shank compatible with standard chucks
• Supply: single-piece delivery

How to use

Secure the drill bit firmly in a compatible chuck and set the drill to the appropriate speed for masonry work. Mark the drilling point, start drilling with steady, even pressure to allow the carbide tip to engage, and avoid excessive lateral force to preserve bit straightness. Periodically withdraw the bit to clear accumulated dust from the hole and the flutes to maintain cutting efficiency and prevent binding. Wear appropriate eye and respiratory protection when drilling into masonry and concrete.

Usage recommendations

Use the drill bit with rotary or hammer drills suitable for masonry tasks; select lower speeds for harder materials and moderate hammer action if available. Regularly inspect the carbide tip for wear and replace the bit when cutting performance deteriorates to ensure clean holes and safe operation.