Drill bit Makita SDS‑Max 38 x 200 x 340 mm, 6‑cut (B-05359)

Makita SDS‑Max 38 x 200 x 340 mm, 6‑cut (B-05359) is a rotary drill bit designed for heavy-duty concrete and masonry drilling. With a 38 mm diameter, 200 mm effective drilling length and 340 mm overall length, this SDS‑Max bit fits SDS‑Max rotary hammers and is intended for anchor hole drilling, through-holes and reinforcement dowel installations on construction and renovation sites. The 6‑cut tip geometry improves cutting efficiency and debris evacuation to maintain drilling speed in dense materials.

Advantages

The 6‑cut tip reduces vibration and concentrates cutting edges for faster penetration in concrete and masonry while promoting efficient dust and chip removal. Hardened steel construction and accurate tip geometry provide consistent hole dimensions and longer service life under repeated impact drilling. The SDS‑Max shank ensures secure tool-bit connection and easy insertion and removal in compatible rotary hammers.

Suitable for

• Drilling anchor holes in concrete for mechanical fixings
• Creating through-holes and service passages in masonry walls
• Installing reinforcement dowels and threaded rods
• Heavy-duty renovation and structural alteration work

Key specifications

• Diameter: 38 mm
• Working/Drilling length: 200 mm
• Total length: 340 mm
• Tip design: 6‑cut (6‑edge) geometry for improved cutting and debris removal
• Shank type: SDS‑Max compatible
• Intended materials: concrete, reinforced concrete and masonry

How to use

Select a compatible SDS‑Max rotary hammer, verify the bit is clean and undamaged, then insert the shank into the tool’s chuck until it locks. Mark the drilling position and, if required, use a pilot punch or center mark. Apply steady axial pressure and operate the hammer at the appropriate speed and impact setting for concrete. Withdraw the bit periodically to clear dust and chips from the hole and allow the bit to cool if drilling multiple holes in succession.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection and a dust mask or extraction when drilling. For precise anchor fitting, verify hole depth and clean the hole before installing anchors or dowels. Match the drill bit diameter to the anchor or dowel specification and avoid excessive side load to prolong bit life.