competitive price professional quality,strict quality control advanced equipment,plenty experience timely delivery ISO9001 BIMETAL HOLE SAWis for working in cast steel and malleable cast iron, stainless steel, structural steel, alloyed and non-alloyed aluminium, bronze, copper, PVC, acrylic, wood. Bi-metal construction.Special M-3 HSS cutting teeth. 4/6 T.P.I. variable tooth pitch achieves easy ...