This set contains 2 saw blades for jigsaws (or rocker saws). The two extra thin saw blades are suitable for processing high-quality wood, PVC and plastic, with a thickness between 8 and 60 mm. The blades measure 100x4 mm and have 6 teeth per inch. They fit on jigsaws from the most common brands that work with a U-shaft (e.g. Black+Decker, Power Base, Skil, etc.).