Features:Our dumbbells are always sold as a pair of two.The outer layer is dipped in plastic, non-slip and wear-resistant. The inner core is solid cast iron, which is not afraid of falling, the hexagonal anti-rolling, safe and does not damage the floor.Ideal for aerobics exercises, light lifting, toning & building strengthProvides effective cross training, burns calories & improves cardiovascular fitnessDurable finish will not crack or fade - Hex shape prevents weights rolling when not in useStrong solid cast design - Built to lastSpecification:Material: Cast Iron & RubberWeight: 9KG (one piece)Package:1x Set of 2 Hex DumbbellsNotice:1. Please allow slight 1-3cm difference due to manual measurement.2. Please allow slight color difference due to different monitors and lighting environments