These are the top quality scroll saw blades woodworkers ask for by name - OLSON! Use these blades with scroll or jig saws manufactured or sold by Delta, Rockwell, Powermatic, RB Industries, Hegner, Sakura, Shopsmith, Excalibur, Rexon, Sears, as well as hand-held fret and jewelers saw frames. These 5" blades will easily handle precise cutting of irregular shapes and straight cut off applications in all types of sheet materials. These pinned scroll saw blades are for machines that require 5" pinned blades. Perfect for Sears Craftsman, Penn State, Delta, Ryobi and all 15" and 16" imported scroll saws that require pinned blades. This blade is.100" wide x.022" thick. The TPI/#Reverse is 9/5. The tooth style on this blade is skip. It has wide-spaced teeth for speed.