Earth clamp types: British style: 600A (I), 600A (III) American style: 200A, 300A (I), 300A (II) Italian style: 250A, 350A Holland style: 300A, 400A, 500A American style: 150A, 300A, 500A, 500 (I), 500 (II) Inner packing: 1pc/color box Outer packing: 30pcs/carton 50pcs/carton