Kett KSV-33 Vacuum Saw Unit comes with four blades and wrenches. This saw head is used for the KSV-33AM saw. Connect this master saws cast aluminum saw head to a canister-type or in-plant vacuum system to control dust when cutting fiberglass or other hazardous materials. The saw uses 2-inch and 2-1/2-inch diameter saw blades with adjustable cutting depths from 0 to 5/8-inch and comes complete with four blades and wrenches. It also cuts C.R. mild steel to 16 gauge; hard aluminum to 1/8-inch; and soft aluminum, brass and copper to 3/16-inch.