▶Size : All the router bits which shank is 8mm shank.the top bearing flush trim router bit bearing diameter is 19.5mm, cutter depth is 51.8mm; the bottom bearing flush trim router bit cutter diameter is 19.5mm, cutter depth is 50.5mm.Please check the specific size according to the size picture ▶Material: Produced with solid hardened steel body and industrial grade micro grain carbide cutters for a sharper & longer lasting edge ▶Feature:Silver induction brazing for maximum strength and durability;clever anti kickback design ensures safe installation. High hook & shear angles allow cutters to slice smoothly into stock producing clean, splinter free;extra long Cutter for combined plunge-cutting and pattern/template routing ▶Application: The top & bottom bearing flush trim pattern router bit set is works great with all kinds of materials and surfaces like woods, mdf, particle boards, plywood, panels, softwood, hardwood.Use on CNC and other automatic routers as well as hand-held and table-mounted portable routers,perfect for woodworking, grooving, smooth cutting ▶What You Get: The router bit set include 1 pc 8mm shank flush Trim template router bit with top bearing , 1pc 8mm shank flush Trim template router bit with bottom bearing