Material: Q235 steel plate Hole Diameter: 50.5mm Weight-KG: 0.25kg 0.5kg 1.25kg 2.5kg 5.0kg 10.0kg 15.0kg 20kg 25kg Weight-LB: 0.5LB 1LB 2.5LB 5LB 10LB 25LB 35LB 45LB 55LB