The thinnest razor saws available with ultra thin .008′ thick metal blades. #150 is ideal for super fine cuts in wood & plastic w/o splitting or ragged edges. #200 offers longer wear in metal cutting applications. Both have shorter cutting depths plus steel backs for greater blade stability. The thinnest razor saws available with ultra thin .008′ thick metal blades. #150 is ideal for super fine cuts in wood & plastic w/o splitting or ragged edges. #200 offers longer wear in metal cutting applications. Both have shorter cutting depths plus steel backs for greater blade stability.