3/8″ Up-Cut Spiral Flush Trim Router Bit – 1/2″ Shank (AstraHP Coated)

The Sweet Spot Between Strength and Precision Designed for projects where 1/2″ bits are too bulky and 1/4″ bits fall short, this 3/8″ up-cut flush trim router bit delivers unmatched versatility. Built from solid carbide, it offers superior strength, heat resistance, and edge retention—ideal for repeated use in dense hardwoods, plywood, and composite panels. The 1/2″ shank minimizes deflection and vibration, while the 3/8″ cutting diameter allows for tight-radius template routing without compromising on control or cut quality. A 1-1/2″ cutting length gives you plenty of reach, and the up-cut spiral geometry ensures fast chip removal and a clean finish on the bottom edge. Whether mounted in a router table or guided by hand, this bit brings a rare combination of agility, power, and long-term durability to your workflow. Specifications: Material: Solid Carbide Cut Diameter: 3/8″ Shank Size: 1/2″ Cut Length: 1-1/2″ Flute Type: Up-Cut Spiral Recommended RPM: 16,000 Applications: Sign routing, pattern work, laminate trimming, curved templates Router Compatibility: Table-mounted and handheld routers Why It’s a Shop Essential: Navigate tight curves without compromising strength Smoother, stronger alternative to 1/4″ bits Ideal for high-precision template work Built to last under demanding use with solid carbide durability