... to ER 50 2.A,M,UM and K type ER spring collet spanner1.Type:ER 8, ER 11, ER 16, ER 20 ... design, manufacture and marketing of machine tool accessories.Production includes milling chuck series,CNC tool series,collet series,boring heads series,etc ... South Asia with increasing trust from customers.We are capable of supplying accessories with German standards,Japanese standards,American standards as ...