Drill Bit AWTools SDS‑MAX Square Shank 35 mm × 800 mm (overall 940 mm) - AWTools

AWTools SDS‑MAX Square Shank drill bit, 35 mm cutting diameter and 800 mm usable length (940 mm overall), is designed for drilling large-diameter, deep holes in concrete, reinforced concrete, masonry and similar materials. The bit features an SDS‑MAX compatible square shank for secure mounting in rotary hammers and provides stable performance for heavy-duty drilling and installation tasks where long reach and wide boreholes are required.

Advantages

The SDS‑MAX square shank ensures reliable retention and efficient power transfer from rotary hammers. A 35 mm cutting diameter offers a balance between hole size and structural integrity for anchor and sleeve installations. The extended usable length of 800 mm enables deep drilling without the need for extensions, improving productivity on demanding jobs. The overall 940 mm length provides sufficient shank length for secure clamping in SDS‑MAX chucks while keeping the working portion accessible.

Suitable for

• Drilling deep anchor and through holes in concrete and reinforced concrete
• Making large-diameter holes for plumbing and electrical installations
• Preparation of holes for chemical anchors and mechanical fixings
• Heavy-duty renovation and demolition where extended reach is needed

Key specifications

• Cutting diameter: 35 mm
• Usable length (working length): 800 mm
• Overall length: 940 mm
• Shank type: SDS‑MAX square shank compatible with SDS‑MAX chucks
• Material compatibility: concrete, reinforced concrete, masonry and similar mineral materials

How to use

Install the drill bit into an SDS‑MAX rotary hammer according to the tool manufacturer's instructions, ensuring the shank is fully engaged and locked. Mark the drilling location and start drilling at low speed to establish a guide before increasing to the recommended operating speed and percussion setting for the material. Apply steady axial pressure without forcing; allow the hammer action to do the cutting. Periodically withdraw the bit to clear dust and debris from the hole and to reduce heat buildup. For deep holes, drill in stages if recommended by the rotary hammer manufacturer.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, hearing protection and dust mask or extraction when drilling. Select an SDS‑MAX rotary hammer with sufficient impact energy and power for 35 mm diameter drilling in concrete. For reinforced concrete, maintain moderate feed pressure and clear the hole frequently to avoid binding. Inspect the bit for wear before use and replace it when cutting performance degrades.