The Starrett BU36-5 ;Wood Cutting Jigsaw Blades with Unified Shank™, will fit virtually all jigsaw machines. These blades feature 170% more weld contact area than standard bi metal blades through the Unique™ solid state diffusion bonding process. This ensures exceptionally strong teeth, combined with the multiple cutting edges and split chip advantage, ensure that these blades typically last 25% longer than directly competing products.