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. Safety Weight Dial System - The newly designed weight dial system holds the dumbbell plates firmly on the handle through 8 locking grooves ensuring the dumbbell set is firm and stable. This set up makes it stable and quiet during the movement which brings a new daily workout experience. High Quality and New Technology - Weight plates are made entirely of silicon steel with an ergonomic anti-slip handle of aluminum alloy. It is combined with a clicking sound when adjusting weight making dumbbells more stable, reliable, and safer during use. What You Get - KEPPI Adjustable Dumbbell, High Strength Tray, Owner's Manual, Includes a lifetime warranty, and friendly customer service.