t.c.tHOLE SAW ideal for cutting mild steel,stainless and tool steel,castiron,cooper, aluminium, not more than 2mm.material:W4,W t.c.tHOLE ... SAWUsing modern and efficient computer-controlled arrangements we manufacture highly exact work pieces for international principals15 years ... between center and centerless. We can braze and harden inductively. T.C.T HOLE SAW