Stanley Surform 140mm Flat File 5-21-102 Moulded bodied flat file surform For use on all types of wood, aluminium, plastics, copper & laminates It has a lightweight plastic moulded body with a thumb screw for quick blade release The slight curve on the blade is for increased stock removal & it can be used on push or pull stroke Blade length: 140mm (5 1/2in)