Features and Benefits: * Cobalt Bi-Metal reciprocation saw blade * Cuts ferrous and non-ferrous metal over 18 ga. -1/8" and fiberglass * Heavy duty blade for demolition work * Universal 1/2" shank fits all types of reciprocating saws * One blade per package Professional bi-metal reciprocating saw blades are designed for professional grade applications. Each blades consists of cobalt high speed steel teeth, electron beam welded to a alloy backbone, to provide flexibility and performance. 1/2" universal shank fits all popular reciprocating saws.