Milwaukee 4" (100 mm) × 9/32" (7 mm) bi-metal T-shank jig saw blades, 6 TPI (teeth per inch) for fast rough cuts in wood. Pack of 5 blades. Bi-metal construction gives longer life than HCS blades in nail-embedded and hardwood cutting. Compatible with all T-shank jig saws including Milwaukee M12 FUEL 2545-20 (see our M12 compatibility guide). Milwaukee P/N 48-42-5302.