Drill bit GRAPHITE SDS+ 12 mm for concrete, model 57H448

GRAPHITE SDS+ 12 mm drill bit, model 57H448, is designed for drilling into concrete and masonry with rotary hammers that accept SDS+ chucks. The 12 mm diameter bit is intended for creating holes for anchors, dowels and other fixing elements during construction and renovation. The geometry of the tip and shank promotes efficient dust removal and provides stable drilling performance in reinforced and non-reinforced concrete.

Advantages

This SDS+ 12 mm concrete drill bit offers compatibility with standard SDS+ rotary hammers for quick insertion and secure retention. Its reinforced tip shape and optimized flute profile improve chip evacuation and reduce binding, which helps maintain drilling speed and prolongs the tool life. The bit’s shank design ensures stable axial alignment and consistent hole diameter, making it suitable for repetitive anchoring tasks on building sites.

Suitable for

• Drilling anchor and dowel holes in concrete and masonry
• Preparation of fixing points for fixtures, brackets and rails
• Construction and renovation works requiring 12 mm boreholes
• Use with SDS+ rotary hammers in indoor and outdoor environments

Key specifications

• Diameter: 12 mm
• Shank type: SDS+
• Intended material: concrete and masonry
• Typical application: anchor and dowel hole drilling
• Design features: reinforced tip and optimized flute geometry for dust removal

How to use

Fit the 12 mm GRAPHITE SDS+ drill bit into the SDS+ chuck of a compatible rotary hammer until it locks. Select hammer or rotary-hammer mode appropriate for the substrate and start drilling at low speed to position the hole; then apply steady pressure and maintain a consistent drilling angle. Periodically withdraw the bit to clear debris and ensure effective dust evacuation. For reinforced concrete, use controlled pressure and short drilling intervals to avoid overheating the bit.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask. Pre-mark hole positions and, when possible, use a pilot mark or centre punch to prevent bit walking. For best results, match the drilling speed and hammer impact setting to the material hardness and allow the bit to cool between prolonged drilling operations.