Drill bit DeWalt DT6716-QZ, length 400 mm, single piece

DeWalt DT6716-QZ drill bit, 400 mm length, single piece, is designed for deep-hole masonry drilling where extended reach is required. The bit features a carbide tip suitable for rotary and rotary-percussion use and is intended for use with compatible DeWalt-style chucks and SDS hammer drills. It is intended for drilling into concrete, masonry, natural and artificial stone, and brick, providing a precise long-reach solution for construction and repair tasks.

Advantages

The long 400 mm length allows access to deeper drilling points without extensions. A carbide masonry tip improves durability and cutting performance when used in rotary or percussion modes. Supplied as a single piece, the bit is ready for immediate installation and use. The design is compatible with common masonry drilling equipment, offering stable centering and consistent progress when penetrating hard materials.

Suitable for

• Drilling deep holes in concrete and reinforced concrete (with appropriate drill settings)
• Creating openings in brick and block walls for anchors and through-holes
• Drilling in natural and artificial stone for installation and repair
• Construction and renovation tasks requiring extended-reach masonry drilling

Key specifications

• Overall length: 400 mm
• Tip material: carbide masonry tip designed for rotary and percussion use
• Pack quantity: single piece
• Primary application materials: concrete, masonry, natural and artificial stone, brick
• Intended use: long-reach masonry drilling in construction and repair

How to use

Fit the drill bit securely into a compatible drill chuck or SDS adapter according to the drill manufacturer’s instructions. Select the appropriate rotary or rotary-percussion mode depending on the material and drilling depth. Begin at low speed to establish a precise start point, then increase speed and apply steady, even pressure while allowing the drill to do the work. Periodically withdraw the bit to clear dust and debris, which helps maintain cutting efficiency and prevents binding. Use appropriate personal protective equipment, including eye protection, gloves, and hearing protection.

Usage recommendations

For prolonged bit life and best results, match drill mode and speed to the material: use rotary-percussion for concrete and masonry, rotary-only for softer stone where percussion may cause chipping. Keep the bit straight and avoid excessive lateral force. When drilling deep holes, withdraw the bit regularly to remove cuttings and reduce heat buildup. Ensure the drill and bit are compatible in shank type and size before use.