Intelligent All-In-One 20KG Adjustable Dumbbell - 3KG to 20KG Adjustments Including Tray Lock System

* [1s to Change the Weights]Easy to change the weight by simply rotating the metal handle back and forth just within 1 second.

* [5 in 1, Money & Space Saving]All 5 in 1, 8 counterweight plates to offer you 5 different weights, Suitable for different family members to train.

* [Rotate the Grip Bar to Add or Take off Weight Plates] This dumbbells only takes one hand to rotate handle bar for weight adjustment,which allows you to set the weight you desired everytime you put the dumbells in the tray, even when doing exercise.

* [5 Level Weight Setting with Dials]There are weight setting dials on the dumbbells, making it so convenient and quick to adjust the weight and sparing you from unscrewing the weights on and off during a workout.

* [Non-Slip & Safety Lock Design]Special safety lock system snaps the gears shut on weight plate holder and the anti-slip bar makes your workout smoothly without slip or safety concerns. A good choice to buid up your upper body, core muscles, and lower body at home.