Build-up & Heat Resistant Teflon Coating, prevents build-up of sawdust, resin, and pitch. High hook & shear angles allow cutters to slice smoothly into stock producing clean, splinter free. Solid Hardened Steel Bodies with Anti-Kickback Design. High hardness and durable for long time, meet the high demands of woodworking. Industrial Grade Premium C3 Micro-grain Carbide Cutters for long-lasting performance, brings sharper cutting experience, improve your work efficiency. Creating smoothly radiused edges on boards and panels. Perfect for woodworking, edging, trimming, veining wood projects. Can be used without the bearing as a standard straight bit, Great for combined plunge-cutting and pattern/template routing For increased work piece visibility, use shank bearing flush trim bit in a handheld router allowing the template to be positioned on top of the work piece Warm Tips: - The tool must be fully inserted and securely tightened so that we can use the clamping force that must be provided during tool machining. Failure to do so may result in breakage and damage to the tool shank. - Don't cutting ferrous metal and non wood materials, such as: steel, iron, sand, etc. - Please keep them away from children to avoid get hurt, because this cutter is sharp enough. - Please wear good protective measures during using, in case of wood chips splash damage eyes. Specifications: Material of Body: Solid Hardened Steel Material of Blade: Industrial Grade Micro Grain Carbide Product Weight:6 Handle:1/4":25.8g 3/8":25.8g 1/2":37.2g 5/8":38.2g 4-piece set:127g 1/4 Shank:1/4":27.8g 3/8":27.8g 1/2":39.2g 5/8":40.2gSet of 4:135g Package Included:4 x Roundover Router Bit