Drill bit GRAPHITE 12 mm for concrete, cylindrical shank (57H320)

GRAPHITE drill bit 12 mm with a cylindrical shank (model 57H320) is designed for drilling clean holes in concrete, masonry and other mineral substrates. Intended for use with standard rotary drills and hammer drills that accept cylindrical shanks, this bit produces precise 12 mm diameter holes suitable for anchors, dowels and through-fixing during renovation and construction work.

Advantages

The drill bit offers a hardened cutting tip and a robust flute geometry for efficient dust removal and stable drilling performance in concrete. Its cylindrical shank ensures compatibility with a wide range of drills and secure clamping in drill chucks. The single-diameter 12 mm design delivers accurate, repeatable hole sizes for reliable fixing placement.

Suitable for

• Drilling 12 mm holes in concrete walls and floors
• Creating anchor and dowel holes in masonry
• Through-holes for conduit and cable routing in mineral substrates
• Renovation and light to medium construction tasks requiring 12 mm fixes

Key specifications

• Diameter: 12 mm
• Shank type: cylindrical
• Material: hardened steel suitable for masonry drilling
• Intended use: rotary and hammer drilling into concrete and similar mineral materials
• Compatibility: standard drill chucks that accept cylindrical shanks

How to use

Mark the drilling point and secure the work area. Fit the 12 mm cylindrical shank into the drill chuck and tighten firmly. For best results in concrete, use the hammer function if available, applying steady axial pressure without excessive side load. Drill in short intervals to clear debris and avoid overheating; withdraw the bit periodically to remove dust. After reaching the required depth, retract the bit while the drill is running slowly to clear the hole.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, dust mask and hearing protection. Select a drill with adequate power for concrete work and ensure the chuck holds cylindrical shanks securely. For deeper holes, clean debris from the hole between passes and consider using a vacuum or compressed air. Avoid using the bit on reinforced concrete where contact with rebar may occur; if reinforcing steel is present, use a suitable masonry/metal combination bit or cutting method.