CNC Engraving bits for advertisement,especially Acrylic 1.Type: engraving bits for advertisement.2.Meterial: AF906(JAPEN)3.Applications:copper ,aluminum,iron,stainless,steel,parts of hard meterial4.good quality and service ,competitive price5.there are many sizes for you to choose,as follows:Item NO2T2ASHK(MM)OVL(MM)M2D-440050.540440M2D-440080.840440M2D-460050.560440M2D-460080.860440M2D-460101. ...