Product Info Catalog Tools Power Drill, Bits & Accessories .5-In. 2-Flute Round-Nose Router Bit .5-In. 2-Flute Round-Nose Router Bit Request a Quote UPC: 08925380382 SKU: 773242 Model Number: 18-108 1/2" Diameter, 2 Flute Carbide Round Nose Router Bit, 1/4" Shank, 1/4" Radius, 3/8" Cutting Length, 1-13/16" Total Length.