Five Dumbbells in One - You only need the space of 1-set dumbbell to get the training experience of 5 different weights. single dumbbell size: 14.2"Lx7.5"Wx6.3"H. Enjoy the benefits of having a complete weight set in your home! 1 Second Weight Adjustment - With Keppi's exclusive weight adjustment design, just turn the handle with one hand to adjust the weight of the dumbbells from 5lb to 25lb in 1 second! Enjoy more convenient adjustment experience and get better training efficiency.