The Starrett BU224S-5 Metal Cutting Jigsaw Blades with Unified Shank™, these blades 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. Supplied in a pack of 5. Specification: Length: 50mm Width: 4.5mm Thickness: 1mm TPI: 24 Tooth: Scroll Set: Wavy Length dimension references tooth bearing section of the blades, the total length including shank is approximately 25mm longer.