Drill Bit Makita SDS‑MAX 38×400×540 mm, 6‑cut (B-05527)

Makita SDS‑MAX 38×400×540 mm, 6‑cut masonry drill bit is engineered for use with SDS‑MAX rotary hammers to create clean, deep holes in concrete, reinforced concrete and natural stone. With a 38 mm diameter, 400 mm working length and a total length of 540 mm, this bit is intended for demanding construction and renovation tasks that require reliable performance and consistent hole quality. The six‑cut head design improves cutting efficiency and reduces vibration during drilling.

Advantages

The 6‑cut geometry provides faster debris removal and smoother drilling compared with standard two‑cut bits. Hardened steel shank and precision‑ground head ensure long service life under heavy use. The SDS‑MAX connection guarantees secure fitment and efficient power transfer from compatible rotary hammers. The combination of long working length and robust construction allows deeper anchor and through‑hole drilling while maintaining stability.

Suitable for

• Drilling deep holes in concrete and reinforced concrete for anchors and rebar clearance
• Creating openings in masonry and natural stone during renovation
• Heavy demolition and structural work requiring repeated large‑diameter drilling
• Professional construction, civil engineering and trade applications

Key specifications

• Diameter: 38 mm
• Working length: 400 mm
• Total length: 540 mm
• Shank type: SDS‑MAX compatible
• Head design: 6‑cut (six‑edge) masonry head
• Material: hardened steel cutting head and body suitable for concrete and masonry

How to use

Install the bit into an SDS‑MAX rotary hammer according to the tool manufacturer's instructions, ensuring the chuck locks securely. Mark the drilling position and start at low speed to center the bit, then apply steady pressure and increase power as required. Withdraw periodically to remove dust and allow the bit to cool when drilling deep holes. Use appropriate personal protective equipment including eye protection, hearing protection and dust extraction or a vacuum attachment when available.

Usage recommendations

For best results, pair this SDS‑MAX 38 mm bit with a rotary hammer that delivers adequate impact energy for large‑diameter drilling. When drilling reinforced concrete, proceed carefully to avoid excessive wear on the cutting edges; replace the bit if cutting performance declines significantly. Use water extraction or industrial vacuuming where dust control regulations require it.