... .Tolerance is +-0.01mm4. It's solid carbide ball end mills. Dia is R6.0mm,Shank is 12mm, Lenght is 75mm ... customize ,if reach 500pcs.7.Business scope: ZHANGJIAGANG RUIZHENG TOOL.CO.,LTD, Which is specialzed in making all sorts of carbide slitting ... pcb,round knife,angle milling cutter,side milling cutter, end mills etc. Also include locksmith key cutter, TRACERS, end milling cutter ...