Concrete masonry drill bit STANLEY STA58551, triangular tip, 12 mm

STANLEY STA58551 is a 12 mm concrete masonry drill bit with a triangular tip designed for effective drilling in concrete, brick and other masonry materials. The triangular cutting geometry improves chip removal and provides stable penetration in demanding applications. Intended for use with hammer drills and rotary hammers, this bit is suitable for construction, installation and repair tasks where precise, durable drilling performance is required.

Advantages

The triangular tip geometry enhances cutting efficiency and helps evacuate debris more effectively than standard point designs, reducing clogging and heat buildup. A 12 mm diameter offers a balance between hole size and material removal rate for common anchoring and fastening tasks. Constructed for use with impact drilling tools, the bit maintains stability during hammering action and resists rapid wear when used for its intended masonry applications.

Suitable for

• Drilling holes in concrete for anchors and dowels
• Creating fixing points in brick and block
• Installation of electrical boxes and conduit in masonry walls
• Repair and renovation tasks requiring consistent masonry holes

Key specifications

• Diameter: 12 mm
• Tip geometry: triangular cutting tip for improved chip removal
• Material application: designed for concrete, masonry, brick and similar hard substrates
• Tool compatibility: for use with hammer drills and rotary hammers
• Intended use: impact drilling in heavy-duty masonry tasks

How to use

Select a suitable hammer drill or rotary hammer and secure the drill bit in the tool chuck according to the tool manufacturer’s instructions. Mark the drilling point on the masonry surface and start drilling at low speed to establish the guide. Apply steady pressure and increase to the recommended hammering action for masonry; avoid excessive lateral force. Periodically withdraw the bit to clear accumulated dust and allow cooling. For deep holes, work in intervals to prevent overheating and reduce wear.

Usage recommendations

Use appropriate personal protective equipment, including eye and ear protection and a dust mask. Match the drill speed and hammer setting to the masonry type and bit diameter. Replace the bit when wear degrades cutting performance or tip shape to maintain safe and efficient drilling.