LONG LASTING - Blade designed for longer cutting life in wood, metal and plastics, FAST AND CLEAN CUTS - Optimized blade design designed for fast, clean cuts in wood, SUPERIOR PERFORMANCE - Optimized for use in both cordless and corded jigsaws, MULTI TOOL COMPATIBILITY - T shank blade connects to all combo jigsaws, and most U shank cordless and corded jigsaws, VERSATILE RANGE - This 20-piece set features a range of blades, including bi-metal for clean wood, nail-embedded wood, metal and plastics; high carbon steel for soft woods, and high speed steel for metal