Bosch 3pc U345XF3 Progressor universal jig saw blades. Ideal for thick and thin wood materals. Ideal for thick and thin materials. Progressive tooth design for fast, fine accurate cuts and longer life in wood with nails, non-ferrous metal, aluminum, and plastics. The most convenient blade. These blades can be used in most jig saws. Bosch Quality for Non-Bosch Jig Saws. 4 15/16 inches long. Made in Switzerland.