360° rotation to select weight, with just one hand! It takes only 1s, you hear the click after turning the dial, and you can enjoy a more direct and seamless exercise experience XDDIAS upgrade 10 in 1 adjustable dumbbell set weight range(3/5/8/10/13/15/18/20/23/25LBS). More even weight distribution helps you get into better shape without having to worry about the burden of overweight upgrades