The Ideal 36-067 is a reciprocating blade. This blade is made of a bi-metal material that provides up to a 10 times lifespan of other blades. The super-hard, high-speed steel teeth give a sharp and long-lasting cutting edge, this edge is shatterproof letting this tool be used on high impact materials such as, plaster, drywall, plaster board and Lath. In 1916, J. Walter Becker started the Ideal Commutator Dresser Company of Chicago from his mother's kitchen. Service, he said, was part of the product. That idea has been the core IDEAL business principle for over 90 years. Today, the many loyal distributors and customers that make IDEAL successful are a testament to Becker's original philosophy.