Drill bit SDS Max AWTools 35 x 400 x 540 mm square shank

The AWTools SDS Max drill bit 35 x 400 x 540 mm with a square shank is designed for heavy-duty rotary and hammer drilling in concrete and masonry. Its 400 mm working length and 540 mm overall length allow drilling of deep boreholes and through-reinforced elements when used with SDS Max-compatible rotary hammers. The square shank provides secure seating in adaptors or chucks that accept this shank type and helps transfer impact energy efficiently for demanding construction and installation tasks.

Advantages

This SDS Max drill bit combines long reach and robust construction to maintain drilling precision in hard materials. The geometry of the cutting head and hardened steel construction improve wear resistance and extend service life under frequent hammer drilling. The square shank design ensures stable engagement with compatible holders, reducing slippage during high-torque or impact-driven applications. Overall length and working length balance accessibility and control when drilling deep anchors, ducts, or passage holes.

Suitable for

• Core drilling and through-holes in concrete and masonry
• Installation of anchors, dowels and heavy fixings
• Service, utility and construction site drilling tasks
• Drilling through reinforced concrete where extended reach is required

Key specifications

• Shank type: square shank suitable for SDS Max adaptors/holders
• Cutting diameter: 35 mm
• Working length: 400 mm
• Overall length: 540 mm
• Intended use: rotary hammer and hammer drilling in concrete and masonry
• Material: hardened steel body with wear-resistant cutting tip

How to use

Select a rotary hammer compatible with SDS Max shanks and ensure the tool is switched off before inserting the drill bit into the chuck or adaptor. Secure the bit fully in the holder so the square shank is seated correctly. Mark the drilling position, start at low speed to establish the hole, then apply steady pressure and use hammer action as required for concrete or masonry. Clear debris from the hole periodically to maintain drilling efficiency and avoid overheating the bit. After use, retract the bit carefully and inspect for wear or damage.

Usage recommendations

Use correct personal protective equipment (eye protection, hearing protection and dust mask) when drilling concrete. Match drilling speed and feed force to material hardness; allow the bit to cool between long drilling cycles to preserve tip life. Replace the bit if excessive tip wear or shaft deformation is visible to maintain drilling accuracy and safety.