Use the RYOBI No. 3 Steel Spiral Screw Extractor to remove those stubborn screws (5/16 in. to 7/16 in.). Simply use a 5/32 in. drill bit to drill into the screw or bolt. Tap the spiral screw extractor into the fastener and use a wrench to assist in twisting the extractor until the fastener is removed. This product features steel construction and black oxide thread for lasting performance.