Drill Bit GRAPHITE SDS+ 20 mm for Concrete, model 57H488

GRAPHITE SDS+ 20 mm drill bit model 57H488 is designed for drilling into concrete with SDS+ rotary hammer systems. The 20 mm diameter makes it suitable for creating holes for anchors, dowels and rebar preparation. The bit is intended for use in machines with SDS+ chucks and provides the shape and dimensions needed for standard concrete fastening and installation tasks.

Advantages

The carbide tip and spiral flute geometry deliver efficient dust removal and sustained cutting action during rotary hammer drilling. Compatibility with SDS+ shanks allows quick, secure mounting and reliable transmission of impact energy. The 20 mm diameter provides a balance between hole size and drilling speed for common fastening applications.

Suitable for

• Drilling holes in concrete for anchors and dowels
• Preparing openings for rebar and insert fittings
• Professional construction and renovation work involving masonry
• DIY projects requiring reliable concrete drilling with an SDS+ rotary hammer

Key specifications

• Diameter: 20 mm
• Shank type: SDS+
• Intended material: concrete and masonry
• Typical application: anchor and dowel hole drilling

How to use

Install the drill bit into an SDS+ compatible rotary hammer according to the machine manufacturer’s instructions and ensure the shank is fully seated. Select an appropriate rotation and impact setting on the tool for concrete. Start drilling at low pressure to establish the hole, then apply steady forward pressure without forcing the bit. Periodically withdraw the bit to clear dust from the hole and prevent overheating. After completing the hole, retract the bit and inspect the hole for correct depth and cleanliness before setting anchors or fasteners.

Usage recommendations

Use appropriate personal protective equipment such as eye protection, hearing protection and dust mask when drilling into concrete. For prolonged drilling or larger diameters, consider using intermittent drilling and allow the bit to cool to extend tool life. Match hole depth to anchor specifications and use a vacuum or blow out dust to ensure proper anchor seating.