Specification: 1#: Short type (set of 10 pieces) Material: High carbon steel The color black Noume: Metric Type of thread: reverse spiral cut, conical Remove #: #1/2/3/4/5/6/7/8/9/10 Suitable hex size: 9/10/11/12/13/14/15/16/17/19 mm. External hex size: 16/16/19/19/19/22/22/25/25/27mm Features: 1. 2 Tap for you to choose. 2. 10pcs damaged nut and bolt extractors 3. Can be driven with a metric wrench or socket. 4. Remove the nut is ten sets of different sizes suitable for damaged and rusty nut bolts, this is considered unscrew screws, nuts and the most important conductive stabilization tool. 5. Whenever you’re faced with a rounded, rusted or painted bolt, bolt extractors free it 6. Reverse spiral flutes are designed to grind to provide maximum gripping power Package included: 10 x Short Type Bolt Extractor