Largest Online Supplier in the USA for Carbide Inserts and Cutting Tools Based in the USA, is the largest online supplier of carbide inserts and cutting tools. Choose from industry leaders Kennametal, Iscar, Mitsubishi Carbide, Seco, Garr Tool, Tungaloy, Widia, SGS, , Walter, Allied Machine, ToolFlo, and of these manufacturers we represent drop ...