Our S1222EF bi-metal reciprocating saw blades feature 12 inch (300mm) length, 18TPI fine teeth, and premium BIM42 high-speed steel construction, designed for smooth, clean cuts in thin metal, steel pipe, sheet metal, PVC and hard wood up to 245mm thick. Universal 1/2″ shank fits all major brands corded/cordless reciprocating saws, ideal for plumbing, HVAC, metal fabrication, demolition and home improvement projects.