【1 Second Weights Adjustment】One Hand One Second 5 Weights changed from 5lb to 25lb. Adjustable Dumbbells Set can be quickly & smoothly adjusted in one second by one hand. Just twist the handle to the desired weight and lift it. 【Safety Weight Dial System】With safe hook structure in Weight Plate. It could prevent from weight plate dropping during exercises. Meanwhile, in your limited workout place, It combines multiple weight blocks into one to be easily stored at home or gym. 【90% Cost & Space Saving】Say goodbye to 5 sets of dumbbells cluttering your workout space. Save time to replace dumbbell plate. It"s perfect for your home gym fitness. 【Super High Quality】These adjustable dumbbells made from solid and rust-free material has long-lasting protection. The dumbbell's tray is made of PP material, fits the dumbbell without shaking, stable and odorless. Durable handle combine with aluminum alloy material and anti-slip texture, which would not rusty and provide more safety. 【After Sales Service】We are committed to providing our customers with a great shopping experience. If for any reason you are not satisfied, please let us know and our customer service team will promptly resolve any issues. Order today and start your fitness journey! These adjustable dumbbells made from solid and rust-free material has long-lasting protection. The dumbbell's tray is made of PP material, fits the dumbbell without shaking, stable and odorless. Durable handle combine with aluminum alloy material and anti-slip texture, which would not rusty and provide more safety.