Features and Benefits: * Professional grade bi-metal hole saw * Cobalt high speed steel teeth resist heat and wear * Cuts 1-1/2" deep holes * Cut hard and soft metals, nail embedded wood, wood and fiberglass * 5/8"-18 thread fits Mountain "B" Arbors Professional grade, bi-metal holes with cobalt high speed steel teeth, electron welded to a shatterproof shock absorbing alloy body. Variable pitch tooth pattern cuts clean through stainless steel, brass, aluminum, pipe steel, nail embedded wood, hardwood, plywood, sheet metal and fiberglass. Cuts 1-1/2" deep holes. Arbor sold separately.