Drill Bit GRAPHITE SDS+ 12 mm for concrete, model 57H440

GRAPHITE SDS+ 12 mm drill bit for concrete, model 57H440, is a rotary hammer accessory designed to create 12 mm diameter holes in concrete, masonry and similar mineral-based materials. The bit features an SDS+ shank for secure fixation in compatible rotary hammers and efficient energy transfer during percussion drilling. It is intended for tasks such as fixing anchors, dowels and through-holes in construction, repair and renovation works.

Advantages

The SDS+ shank ensures quick, slip-free insertion and removal in compatible chucks, reducing downtime when changing tools. The bit’s tip geometry and flute design enable effective debris evacuation and stable drilling in hard substrates. Its length and diameter provide a balance between reach and rigidity, giving consistent hole quality for anchor and fastening installations.

Suitable for

• Drilling 12 mm holes in concrete and reinforced concrete
• Creating holes in brick, blockwork and masonry
• Installing anchors, bolts and wall plugs
• Through-holes for cable and pipe passages in construction works

Key specifications

• Diameter: 12 mm
• Shank type: SDS+
• Intended material: concrete, masonry and similar mineral substrates
• Application: percussion rotary drilling with compatible rotary hammers
• Typical use: anchor and dowel installation, through-holes

How to use

Fit the drill bit into the SDS+ chuck of a compatible rotary hammer until it locks. Select the hammer-drill mode appropriate for concrete drilling and set the correct drilling speed if the tool supports variable settings. Position the bit on the marked drilling point, start at low speed to establish the pilot, then apply steady pressure while allowing the hammer action to do the work. Withdraw the bit periodically to clear dust from the hole, and use a brush or compressed air to remove debris before inserting anchors or fasteners.

Usage recommendations

Use appropriate personal protective equipment including eye, hearing and respiratory protection. For reinforced concrete, proceed with caution and check for rebar; reduce feed pressure when contacting metal. Match drill diameter and depth to anchor or dowel specifications. Store the bit in a dry place to avoid corrosion and inspect the tip for wear before reuse; replace if the cutting performance degrades.