• 6 blades: 2 bi-metal HSS for metal, 4 HCS for wood
• U-shank (universal) fits older and universal-shank jigsaws
• Includes: 1 ea. 3071320 (3 in./20 TPI), 3071314 (3 in./14 TPI), 3071406 (4 in./6 TPI), 3071412 (4 in./10 TPI); 2 ea. 3071410 (4 in./10 TPI)
• HSS blades for ferrous/non-ferrous metals, aluminum, sheet steel
• HCS blades for hardwood, softwood, plywood, laminate, particle board

The Irwin Marathon 6-piece U-shank jigsaw blade assortment covers the most common cutting applications for jigsaws that accept universal (U-shank) blades. The two bi-metal high-speed steel blades handle metal cutting from thin sheet to medium stock, while the four high-carbon steel blades tackle wood from fast rough cuts (6 TPI) to smooth finish cuts (10 TPI). Compatible with older Black & Decker, Craftsman, Skil, and other U-shank jigsaw models.