... UM Type ER Wrench Hand Tool1.Three ER Wrench Hand Tool: type A, type M, type UM.2.Using SCM ... BS, ER40UM-BS, ER50UM-BS.6.ER M type hand tool: ER8M-BS, ER11M-BS, ER16M-BS, ER20M-BS, ... carbide end mills, carbide inserts, carbide rod, drill, reamer, tool holder, tool heads, chuck, collet, nut, etc.If you are interested ... will reply you at once, thank you! ZHY High Precision M And UM Type ER Wrench Hand ...