Drill Bit SDS‑MAX AWTools 28×600×740 mm, square shank

SDS‑MAX AWTools 28×600×740 mm drill bit with a square shank is a specialist masonry bit engineered for deep rotary hammer drilling in concrete, stone and other solid mineral materials. The bit has a 28 mm diameter, a 600 mm working length and a total length of 740 mm, providing extended reach for through‑walls, deep anchor holes and installations where standard bits are too short. The SDS‑MAX interface ensures compatibility with SDS‑MAX rotary hammers; the square shank offers secure seating in adaptors or chucks designed to accept this form.

Advantages

The long working length reduces the need for multiple passes and enables drilling of deep holes in a single operation. The 28 mm cutting diameter balances hole size and material removal rate for common anchor and dowel applications. The SDS‑MAX connection provides robust retention and efficient impact energy transfer appropriate for heavy rotary hammering, while the square shank improves mechanical grip when used with matching adaptors. The bit is designed to withstand repeated use in masonry and concrete when used with appropriate tool speeds and cooling practices.

Suitable for

• Drilling deep anchor and dowel holes in reinforced concrete
• Creating through‑holes in masonry and stone for pipework and conduits
• Installation work requiring extended reach, such as facade anchors and embedded fittings
• Construction tasks where SDS‑MAX rotary hammers are specified

Key specifications

• Diameter: 28 mm
• Working length: 600 mm
• Total length: 740 mm
• Shank type: square shank (suitable for adaptors/chucks that accept square shanks)
• Intended materials: concrete, masonry, stone

How to use

Select an SDS‑MAX rotary hammer or compatible adaptor that accepts a square shank, secure the bit according to the tool manufacturer’s instructions, and mark the drilling position. Start drilling at low speed to establish the pilot seat, then apply steady pressure and maintain the hammer action for efficient material removal. Withdraw the bit periodically to clear dust and debris from the hole and to avoid overheating. For reinforced concrete, use appropriate protective equipment and proceed with caution when encountering rebar.

Usage recommendations

Use appropriate personal protective equipment, including eye and ear protection and dust extraction or a vacuum if available. Match drill speed and hammer settings to material hardness and bit diameter, and replace the bit when signs of excessive wear or loss of cutting efficiency appear to maintain hole quality and operator safety.