Drill bit 4 mm x 110 mm, DeWalt DT9502-QZ, for rotary hammer, 1 pc

DeWalt 4 mm x 110 mm drill bit DT9502-QZ is a single rotary-hammer bit engineered for drilling small-diameter holes in masonry, concrete and brick when used with a compatible SDS Plus rotary hammer. The bit combines a two-cutter solid carbide head with two additional cutting tips and a four-flute spiral body to keep drilling efficient and to evacuate debris quickly, maintaining steady speed and penetration during repetitive work.

Advantages

The hardened body increases resistance to bending and breakage during impact drilling. The advanced tip geometry improves initial bite and sustained cutting performance, resulting in faster drilling rates and extended bit life compared with conventional masonry bits. The four-flute spiral helps clear dust and fragments from the hole, reducing binding and heat build-up for consistent results over longer runs.

Suitable for

• Drilling plug, anchor and clearance holes in concrete
• Creating small-diameter holes in masonry, brick and block work
• Applications requiring use with an SDS Plus rotary hammer

Key specifications

• Drill diameter: 4 mm
• Overall length: 110 mm
• Tip material: solid carbide multi-cutter design
• Shank type: SDS Plus compatible
• Body: hardened steel with four-flute spiral for fast debris removal
• Pack quantity: 1 piece

How to use

Select a rotary hammer fitted with an SDS Plus chuck and ensure the tool is set to hammer-drilling mode. Insert the bit into the chuck and lock it securely. Start drilling at low speed to establish the hole location, then apply steady pressure and allow the hammer action to do the cutting—avoid excessive force. Periodically withdraw the bit to clear dust and check progress when drilling deep holes. After use, clean any remaining dust from the flutes and store the bit dry to prevent corrosion.

Usage recommendations

Wear appropriate eye, ear and respiratory protection when drilling masonry. Use the bit for small-diameter holes and anchors; for larger diameter or prolonged heavy-duty work, select a bit sized for that application. Inspect the bit before use for signs of wear or damage and replace if the tip is chipped or the shank is deformed.