For heavy-duty, dust free cutting of fiberglass, plastics or hazardous dust-producing materials, this powerful 1500 RPM D-handled vac saw, with cast aluminum saw head, connects to your cannister-type or in-plant vacuum system. It uses a 3-1/2" diameter high-speed steel saw blade and provides adjustable cutting depths up to 1-1/16". You can start with a plunge cut in the middle of a panel and quickly cut C.R. mild steel up to 16 gauge, hard aluminum to 1/8", soft aluminum, brass and coper to 3/16" with a 2-1/2" diameter high-speed steel saw blade.