SICWOOD Extra Long 4 Inch Solid Carbide Spiral Router Bit is engineered to conquer deep-cutting challenges that are impossible with standard-length tools. Its impressive reach allows you to machine deep pockets, profile the edges of extra-thick stock, and create tall 3D sculptures with unparalleled ease.

Made from solid carbide, this bit maintains exceptional rigidity to resist bending and vibration, ensuring straight, accurate cuts even at maximum depth. The efficient up-cut spiral flutes ensure that chips are cleanly ejected from deep work areas, preventing re-cutting and heat damage to both the tool and your workpiece.

Ideal for use on CNC machines and robust handheld routers, this bit opens up new possibilities for working with thick hardwoods, laminated panels, and complex prototypes. It is the ultimate tool for sign makers, furniture builders, and any craftsman who needs to push the boundaries of depth in their woodworking projects.

NOTE:
Extra-long 4-inch design with clear breakage-prevention tips, ensuring safe, durable use: To avoid breakage, use multiple shallow passes (1/8–1/2 inch per pass, based on material), slow steady feed rates (10–20 IPM). Secure the 1/4 shank with an ER collet (clamp ≥1 inch depth) to reduce vibration. Stick to recommended materials (softwoods/hardwoods/MDF) & RPM (12,000–24,000), and check for cracks before use—extending the bit's lifespan.