Drill bit GRAPHITE SDS‑MAX 20 mm for concrete, model 57H520

GRAPHITE SDS MAX 20mm concrete drill bit is designed for rotary hammer drilling in reinforced and non-reinforced concrete, masonry and stone. The 20 mm diameter provides a balance between drilling speed and hole size for anchor installation, through-holes and utility passages. The SDS MAX shank ensures secure engagement with compatible rotary hammers, enabling efficient power transfer and stable drilling performance.

Advantages

This drill bit combines a carbide-tipped cutting head with a robust body to resist wear during repeated use in abrasive materials. The SDS MAX connection offers fast, tool-free bit changes and reliable retention under heavy impact loads. Its 20 mm diameter delivers consistent hole dimensions for anchoring and dowelling while maintaining acceptable drilling speed and control.

Suitable for

• Drilling holes for anchors and chemical studs in concrete
• Creating through-holes for pipes and wiring in masonry
• Preparing fixing points for structural or installation work

Key specifications

• Diameter: 20 mm
• Shank type: SDS MAX
• Intended materials: reinforced concrete, non-reinforced concrete, masonry, natural stone
• Tip material: carbide-tipped cutting head
• Application mode: rotary hammer drilling with hammer function

How to use

Install the bit into an SDS MAX compatible rotary hammer until it locks in place. Use the hammer drilling mode and apply steady axial pressure, allowing the tool to perform the impact action rather than forcing the bit. Start at low speed to position the hole, then continue at a suitable drilling speed for the material. Periodically withdraw the bit to clear dust from the hole and reduce friction. For deep holes, clear debris frequently to maintain drilling efficiency.

Usage recommendations

Wear appropriate personal protective equipment including eye protection, hearing protection and a dust mask. Use a drill with sufficient power and correct SDS MAX chuck. For precise anchor holes, verify diameter and depth requirements before drilling and use water or dust extraction when required to reduce airborne silica dust.