The PipeKnife® Company manufacturers multiple specially designed blades for the electric caulk cutter tools. Designed with offsets, special bends and tips the blades are used to remove multiple pane glass, recessed areas, auto glass and difficult to reach locations. Packaged in units of 1 Blade, the hole pattern is designed for use on the FEIN Supercut and with the insert for the Sonicrafter tool.