Nut rivet mandrels size: M3 / M4 / M5 / M6 / M8. The rivet gun adopt ergonomics design to greatly save your strength. High tensile aluminum body with forged carbon steel top handle. The portable box makes sure you take it to any place you want to go, which is space saving and convenient. Suitable for use in car, trailer and furniture repair, or even boat building. Descrioption: 100% brand new and high quality Body Material: Steel Handle Cover Material: Rubber Color: Blue+Black Nut Rivet Mandrels Size: M3/M4/M5/M6/M8 Hand tool total length: approx.27cm/10.63 Characteristic: Includes wrench to hold handles and adjust chucks. Ergonomic steel tool with non-slip handle. Durable, easy to use. Suitable to be used in car, trailer and furniture repair, or even boat building. LRFR is committed to providing each customer with the highest standard of customer service.