Adjustable Hole Cutter for cutting drywall wood plaster and acrylic sheeting up to 7/8” thick and metal sheets up to 1/16” thick. Supplied with transparent cowl to prevent chips from injuring user. Also supplied with two blades balance- bars and adjusting wrench in a handy tool box. Works with either variable speed hand drill or drill press. Contact your local Elco sales rep for replacement parts.