5 Pack, 4" 6T, Fast Clean Cut Wood HCS T-Shank Jig Saw Blade, T-Shank High Performance Wood Cutting HCS, Reinforced Tooth Design Protects The Teeth From Damage & Stays Sharper Longer, Side Chip Path Helps To Quickly Remove Debris & Clear The Channel For Cleaner & Smoother Cuts, T-Shank Design Fits All Bosch & DeWalt Jig Saws, Used In A Variety Of Woodworking & Wood Cutting Jigsaw Applications.