Features 1、The riveting nut rod and the nut l-ead the mouth to be possible necessary to assemble are laying a-side together. 2、Easy to use and prevents loss. 3、Fits most standard nut riveters. 4、Made from high strength steel. 5、Come with a colorful sturdy plastics box for store and classify the size of different mandrels. Specification Save money and replace nut rivet mandrel instead of buying a new riveter. Features: The riveting nut rod and the nut l-ead the mouth to be possible necessary to assemble are laying a-side together. Easy to use and prevents loss. Fits most standard nut riveters. Made from high strength steel. Come with a colorful sturdy plastics box for store and classify the size of different mandrels. Specifications: Size: M-3, M4, M5, M6, M8, M10, M12Mandrel (optional) Main color: black Main materia: metal Package size: 58 * 25 * 25mm / 2.3 * 1.0 * 1.0in Package weight: M-3, M4, M5, M6, M8: 40g / 1.4ounce M10: 49g / 1.7ounce M12Mandrel: 55g / 1.9ounce Packing List: 1 * Mandrel Package List 1 * Mandrel