4pc SGS Pro SF-53 Solid Carbide Cone Shape Router Burr: 3/16” dia. 1/8”shank $28.26 Router Bit Material Solid Carbide Brand SGS End Type Plain Number of Flutes 12 MPN 1158119A Country/Region of Manufacture United States Application Fiberglass. Carbon Fiber, Composite Milling Cutting Length 1/2 inch condition New 4pc SGS Pro SF - 53 Solid Carbide Cone Shaped Router Burr: for Composites / Fiberglass 3/16"diameter X 1/2" Cut Length, 1/8”shank; 1-1/2" OAL Thanks for looking. Feel free to ask any questions. Please check out my other quality machinist tools. Always sent properly packed and tracking number given as soon as its sent.