Combines 17 set of weights into one, using a unique dial system (17 Adjustable Weight Options (KG) : 5/7/9/11/13/15/18/20/22/25/27/29/32/34/36/38/40）
Switching weights is easier than ever – 3 Sec Weight Adjustment
How do i adjust the dumbbells' weight?
Simply turn each adjustment knob to the number of the desired weight. You will know you have fully and correctly selected the number when you feel the adjustment knob settle into a notch and you hear a clicking sound