Freud Router Bit 39 504 1 7 64 In Dia 3 8 In Shank Top Bearing Cove Bead (18000 RPM TiCo Carbide Perma SHIELD Template Decorative Millwork Tool) Fuel Tank The Freud 20 574 is a The Freud 20 574 is a 1 1 8 inch overall diameter 60 degree flat bottom lettering router bit engineered to rout raised letter sign backgrounds Forged from high torque impact rated alloy steel and paired with a 90 tooth 3 8 inch drive pass through ratchet TiCo High Density Micrograin Carbide: Proprietary titanium cobalt carbide formulation maintains razor sharp edges up to four times longer than standard carbide bits (1) Freud 39 504 1 7 64" Diameter Top Bearing Cove and Bead Groove Router Bit with 3 8" Shank