Flat chisel drill bit Makita B-64238 Length 250 mm

The Makita B-64238 flat chisel drill bit, length 250 mm, is designed for efficient material removal and precise chiselling when used with compatible rotary hammers and chipping tools. Its elongated 250 mm length provides access to deeper chipping and demolition tasks while the flat chisel profile delivers a straight, controlled cut edge suitable for breaking mortar, removing tiles, and shaping concrete surfaces.

Advantages

The flat chisel geometry offers a wide contact area for faster material removal compared with pointed bits, and the hardened steel construction ensures resistance to wear during repeated impact use. The 250 mm working length increases reach for recessed or hard-to-access areas, while the machined tip maintains consistent performance and stable impact transfer. The bit is compatible with standard tool holders for straightforward installation and replacement.

Suitable for

• Chiselling and removing tile adhesive or mortar joints
• Demolition of thin concrete sections and surface levelling
• Cleaning out grooves, channels, and joint seams
• Preparing concrete surfaces for repair or finishing

Key specifications

• Tool type: flat chisel drill bit
• Length: 250 mm
• Tip profile: flat chisel
• Material: hardened steel suitable for impact use
• Fitment: standard rotary hammer/chipping tool connection

How to use

Secure the flat chisel bit in the rotary hammer or chipping tool according to the tool manufacturer's instructions, ensuring a firm lock before operation. Position the chisel edge on the work surface and apply steady, controlled pressure while operating the hammer function; do not force the tool beyond its intended impact action. For progressive removal, work along the surface in overlapping passes until the desired depth or profile is achieved. Periodically inspect the bit tip for wear and replace when the cutting edge becomes rounded or damaged.

Usage recommendations

Use appropriate personal protective equipment including eye protection, hearing protection, and gloves. Match the bit to the correct tool size and operating mode, avoid side-loading the chisel, and allow the tool to cool under heavy use. Store the bit in a dry place to prevent corrosion and inspect before each use to ensure safe operation.