Whiteside RU4125T Up Cut Triple Flute Spiral - 3/8″ CD x 1 1/4″ CL x 3/8″ Shank

Materials: Natural woods, composites, hard plastics, thin aluminum

Recommended RPM: 16,000-18,000 (max 24,000)

Three flute design allows these bits to provide the best finish on your project. Up cut spiral design provides the best control with hand or table routing. When creating dado's this design brings chips up and out of the cut.

• TOOL SPECS: Solid carbide, up cut, three flute spiral with 3/8" cutting diameter, 3/8" shank, 1-1/4" cutting length, and 3" overall length for use in routers with a 3/8" collet.
• THREE FLUTES: Provides a cleaner finish and more efficient chip ejection on hardwoods, ensuring smooth, precise cuts with reduced mess.
• HIGH FEEDS: The three-flute design enables higher feed rates, increasing cutting efficiency and productivity for faster results, especially on CNC machines.
• UP CUT SPIRAL: Ideal for smooth finishes and rapid chip removal. Up cut spirals create a clean edge on the side of the material that is farthest from the router.
• HELIX: The upward cutting action removes chips efficiently, especially in deep cuts. The spiral helix ensures clean, crisp cuts while outperforming standard straight bits.
• MULTI-PURPOSE TOOLING: Plunge-capable bit for precision woodworking. Perfect for creating grooves, dados, slots, pockets, and more.

Availability: In stock at our supplier — typically ships in 3–7 business days. Contact us to confirm lead time on larger quantities.