These are the top quality scroll saw blades woodworkers ask for by name - OLSON! 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.