... /50/75/1006019.0535/50/75/100HSS/T.C.T annular cutter,with unique geometry type and the alternating tooth design, provide ... effective for drilling.Better and quicker than common drills.TCT annular cutter has the advantage ofbeing durable and super tough, due ... widely used in drilling steel,copper, aluminum, stainless steel and plastic, in either plate or pipe form.Can be used on ...