【MATERIAL: PLASTIC + METAL】Lower noise. Small size and easy to carry, more efficient.【SPECIFICATION】Nozzle size: 2.4mm / 3.2mm / 4.0mm / 4.8mm; 2PC hexagon wrench: 10mm, 16mm, 23mm, 27mm, 31mm.·【HIGH EFFICIENCY】Ensures high productivity and improve your return on investment with very low installation cost.·【EASY TO USE】2PCS wrench can open the head easily when get stuck. Quick release and installation. Excellent ergonomics, great strength and great added features.·【WIDE APPLICATION】As tool accessory this rivet gun can be combined with various types of power tools. Widely used in the door and window industry, electrical air conditioning, automobile manufacturing and other production, aviation and navigation equipment and other riveting.