Milwaukee 4" (100 mm) × 9/32" (7 mm) bi-metal T-shank jig saw blades, 6 TPI for softwood, plywood, OSB and other multi-material cuts. Pack of 5 blades. Bi-metal construction for durability across mixed-material cutting. T-shank fits all modern jig saws. Milwaukee P/N 48-42-5300.