These are the top quality scroll saw blades woodworkers ask for by name - OLSON! Use these plain end 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. This hook blade has extra wide gullets for rapid cutting of solid hard/soft wood and multi-layers from 3/4" up to 2" thick. This blade is.080" wide x.018" thick. The TPI is 7. The tooth style on this blade is hook. Plain-end style. It is ideal for thick stock or stacked wood.