"ROBERT BOSCH TOOL" TPI METAL BLADEFits bosch models For very thin material Straight cuts in metal As well as other older bosch models. 5 pack, 3" 24 tooth metal cutting jig saw blade For metal less than 1/8", for thin material Non-ferrous metal, sheet metal, aluminum 1/64" - 3/64" For mateial thicknesses under 3/64" use a thin piece of scrap wood as backing