hole saw (China)

HSS bi-metal Hole saw made in China Material: M3/M42 High speed steel Tooth: 4/6 variable Tooth Application: cut accurate holes in machinable materials up to 38mm/44mm thick, 14mm to 210mm in diameter (9/16" to 8-17/64") Usage: used in portable electric, air tools, drill presses, and lathes, boring mills, milling machines or any other machine, which has a rotating spindle Capacity: recommended for cutting steel and cast iron pipe, steel plates, aluminum, copper, brass, stainless steel, wood and plastics