Made from pre-tempered high carbon steel with uniform hardness throughout. Narrow Wood Blades can cut hard or soft wood. The .014 and .018 gauges are for bench top saws and .020 gauge is for stationary band saws with up to 14" diameter wheels. Olson Narrow Wood Blades are efficient, economical hobby band saw blades for occasional users. Olson Wood Band is similar to band saw blades supplied by Delta, Sears and Vermont American for bench top and stationary band saws.