Features: 10pcs damaged bolts and nuts extractor. Works well on removing a rusty or stubborn bolt and nut easily. Comes with a sturdy storage case. High-precision and high hardness manganese steel material. It is suitable for most nuts and bolts on the market. Specifications: Material: Steel Item Weight: 450g / 15.87oz Package Weight: 622g / 21.94oz Package Size: 17 * 7.5 * 3.5cm / 6.69 * 2.96 * 1.38in Packing List: 10 * Nut Extractor 1 * Storage Case Note: The color of the Sponge will randomly sent between Black and Blue, please in kind prevails, thanks.