IRWIN 373434BX 4-3/4-Inch Bi-Metal Hole Saw

Bi-Metal Construction - for toughness and long lifeElectron Beam Weld - for stronger, longer lasting teeth4/6 Variable Pitch Teeth - for reduced noise and improved performanceVariable Depth Gullets - provides more efficient chip clearanceWill cut holes in aluminum, copper, iron, stainless steel and zinc.Variable depth gullets provide more efficient chip...