JLL 20kg Cast Iron Dumbbell/Barbell SetIt is fully adjustable so you can select the weights you desire to lift. It is quick and easy to adjust the weights as they can be slid on to the bar and secured into place by the spin lock collars. Each spin lock collar contains a rubber grommet which further enhances the security of the weight plate on the bar decreasing its chance of unnecessary movement.The JLL Dumbbell Set boasts the classic?Hammertone?look. Each weight plate is clearly identified by a raised number that will not wear down over time. Dumbbells are great tools for strengthening and toning a wide variety of muscles including the?biceps, triceps, deltoids, latissimus dorsi, quads, glutes, hamstrings, calves?and?core abdominals.?Set includes:4 x 1.75kg Cast Iron Weight Plates4 x 2.5kg Cast Iron Weight Plates2 x 35cm in Chrome Dumbbell Bar (1.23kg each)1 x 20cm in Chrome Dumbbell Bar (0.78kg each)4 x Spinlock Collars (0.23kg each)Please note the actual weight of this set is 20.24kg