Drill bit DeWalt DT9581 for rotary hammer, 16 mm diameter, 300 mm length, 1 pc

DeWalt DT9581 is a single 16 mm diameter drill bit made for use with rotary hammers. With a total length of 300 mm and a carbide-style tip, this bit is designed to make straight, deep holes in concrete and masonry materials. The shank and overall geometry are matched to rotary hammer chucks to ensure stable rotation and efficient impact transfer during heavy-duty drilling operations.

Advantages

The 16 mm diameter provides a balance between material removal and structural integrity of the hole, while the 300 mm length allows for deeper penetrations without frequent repositioning. The carbide-style tip improves wear resistance and cutting performance in abrasive masonry and concrete. Compatibility with rotary hammer systems helps maintain drilling accuracy and reduces the risk of bit slippage under impact load.

Suitable for

• Drilling anchor and through-holes in concrete and reinforced concrete
• Installing fasteners, dowels and sleeve anchors in masonry
• Preparation work for plumbing and electrical installation passes through walls
• Renovation and construction tasks that require straight, deep holes

Key specifications

• Diameter: 16 mm
• Total length: 300 mm
• Tip material: carbide-style cutting tip
• Intended tool type: rotary hammer
• Pack contents: 1 piece

How to use

Fit the drill bit into the rotary hammer chuck according to the tool manufacturer’s instructions and ensure it is securely locked before operation. Select the appropriate speed and hammer setting for concrete or masonry; apply steady forward pressure without forcing the bit. Periodically withdraw the bit to clear dust and debris from the hole to maintain drilling efficiency and avoid overheating. For through-holes, check alignment and depth regularly to achieve the required result.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when drilling. For reinforced concrete, use controlled feed and allow the carbide tip to do the cutting to prevent premature wear. If drilling deep holes, cool and clear the bit periodically and confirm tool and bit compatibility with the rotary hammer model in use.