Whiteside RU2111A O-Flute Up Cut Spiral 1/4"SH, 1/4"CD, 1-1/8"CL is the i router bit for plastic projects, crafted from solid carbide to deliver a smooth, precise cut through a unique shear cutting action. This design effectively reduces material buildup on the cutting edge, ensuring cleaner results. The spiral flute surpasses traditional o-flute straight bits by providing superior cutting performance and excellent chip ejection. Featuring an oval-shaped flute, it rapidly removes chips away from the cutting edge, preventing soft materials from sticking or gumming up the bit. Its up cut spiral design is for achieving smooth finishes and quick chip removal, creating clean edges on the side of the material farthest from the router. The spiral helix gently sweeps through materials, producing crisp cuts and outperforming standard straight bits. This bit excels in plastics and aluminum, especially soft materials prone to melting, and also performs well in solid woods. It is compatible with hand-held routers, router tables, and CNC machines, making it versatile for a wide range of applications. operating speeds range from 18,000 to 20,000 RPM, with a maximum of 24,000 RPM. Model Number: RU2111A