Drill Bit GEKO SDS MAX 20 mm x 450 mm, model G42045

The GEKO SDS MAX 20 mm x 450 mm drill bit (model G42045) is a long masonry drill designed for use with SDS MAX rotary hammers. With a 20 mm working diameter and 450 mm overall length, this bit provides extended reach for drilling through concrete, masonry and similar construction materials. It is intended for tasks that require a robust, large-diameter hole or deeper penetration than standard-length bits allow.

Advantages

This SDS MAX drill bit features a durable flute design and carbide tip geometry suitable for hammer drilling in concrete and masonry. Its extended length allows access to deeper work areas and through-holes without changing to intermediate extensions. The shank compatibility with SDS MAX chucks ensures secure retention and efficient impact energy transfer during heavy-duty drilling. The bit balances rigidity and chip removal to reduce binding and improve drilling progress in reinforced or dense substrates.

Suitable for

• Drilling through concrete walls and floors where extended reach is required
• Creating anchor holes for bolts, anchors and fixings in masonry
• Making clearance holes for rebar or conduits
• Professional construction and renovation tasks requiring larger diameter masonry holes
• DIY projects that demand deeper penetration than standard bits provide

Key specifications

• Working diameter: 20 mm
• Overall length: 450 mm
• Shank type: SDS MAX compatible
• Tip material: carbide for masonry drilling
• Intended use: rotary hammer drilling in concrete and masonry

How to use

Mount the drill bit securely into the SDS MAX chuck of a compatible rotary hammer according to the tool manufacturer's instructions. Select the hammer-drilling mode and position the bit perpendicular to the work surface for best results. Start drilling at low speed to establish the pilot contact, then apply steady pressure without forcing the bit; allow the hammer action to do the cutting. Periodically withdraw the bit to clear dust and debris from the hole, which helps maintain drilling speed and prevents jamming. For through-holes or deep drilling, check alignment and progress frequently.

Usage recommendations

Use appropriate personal protective equipment, including eye protection, hearing protection and dust mask or extraction when drilling concrete and masonry. Match drill speed and applied pressure to the material and tool capacity. For reinforced concrete, proceed cautiously and consider pre-drilling smaller pilot holes if rebar is expected. Store the bit in a dry place and inspect the carbide tip for wear before use; replace the bit when cutting performance declines.