Size Information ： 10 pieces damaged nut and bolt extractors, internal size is 9/10/11/12/13/14/15/16/17 / 19mm. The outer hex size is 16/16/19/19/19/22/22/25/25 / 27mm Superior performance ： Spiral cut teeth provide positive grip, remove circular or damaged bolts.Can be driven with a metric wrench or socket. 【Convenient extraction tool】 Remove the nut, it is ten sets of different sizes suitable for damaged and rusty nut bolts, they are considered unscrewing screws, nuts and the most important conductive stabilizer tool. 【Multifunctional】 Twisted socket set is suitable for removing rust and wear, as well as coating the paint coating of nuts, bolts. screws. Specifications: Color: Black Standard: M-clamp Thread type: inverted spiral cut, taper Model: # 1/2/3/4/5/6/7/8/9/10 Internal size (suitable for removing hex size): 9/10/11/12/13/14/15/16/17 / 19mm Size of the outer hexagon: 16/16/19/19/19/22/22/25/25/27 mm Packing list: 10 x nut extractor Note: this does not include other things, The color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!