... .ZHY M And UM Type ER Wrench Hand Tool1.Three ER Wrench Hand Tool: type A, type M, type UM.2.Using SCM ... tool holders, to tighten the tool.4.ER A type hand tool: ER11A-BS, ER16A-BS, ER20A-BS.5 ... ER32UM-BS, ER40UM-BS, ER50UM-BS.6.ER M type hand tool: ER8M-BS, ER11M-BS, ER16M-BS, ER20M- ... cnc tools: carbide end mills, carbide inserts, carbide rod, drill, reamer, tool holder, tool heads, chuck, collet, nut, ...