Router bit Makita D-47385 — 4 mm shank diameter, 51 mm length

Makita D-47385 is a router bit with a 4 mm shank diameter and a total length of 51 mm, intended for use in compatible handheld routers and trimming tools. It is designed to perform precise edge profiling, grooving and finishing on wood and wood-based materials. The compact length and small shank diameter make this bit suitable for detailed carpentry and cabinetry tasks where access and control are limited.

Advantages

The 4 mm shank provides compatibility with routers and trimmers that accept small-diameter bits, enabling fine-detail work. A 51 mm overall length balances accessibility with stability, allowing controlled cutting in tight or constrained spaces. The bit is manufactured to meet Makita quality standards for dimensional accuracy and consistent cutting performance, reducing the need for frequent adjustments during repetitive tasks.

Suitable for

• Edge profiling and rounding on soft and hardwoods
• Small grooves and decorative trimming
• Cabinetry finishing and joinery detail work
• DIY projects requiring compact bits for precision

Key specifications

• Shank diameter: 4 mm
• Total length: 51 mm
• Intended material: wood and similar wood-based materials
• Tool compatibility: handheld routers and trimmers that accept 4 mm shanks
• Use type: edge profiling, grooving, trimming and finishing

How to use

Install the 4 mm shank securely in the router or trimmer collet according to the tool manufacturer's instructions, ensuring the bit is tight and correctly seated. Set the router speed appropriate for the workpiece material—lower speeds for hard woods and higher speeds for softer materials—while following the router's recommended range for small-diameter bits. Make shallow passes and maintain steady feed rates to avoid overheating and to achieve a clean profile. Support the workpiece properly and use edge guides or fences when consistent profiles or grooves are required.

Usage recommendations

Inspect the bit before use for any damage or wear; replace if cutting edges are dull or chipped. Wear appropriate personal protective equipment including eye and hearing protection and use dust extraction or a mask when routing to limit inhalation of wood dust. For optimal results, make multiple light passes rather than one deep cut, and allow the bit to cool between extended runs to preserve edge life.