Pull up and slide adjuster to your desired setting in one easy motion. The internal locks on the dumbbell tree holds a combo of plates securely in place.
Compared to the 55lbs adjustable dumbbells, these have a slimmer profile that make it easier for at-your-side movements. Less bulky while being relatively heavy weight.
Two 44 lbs dumbbells ordered; arrived with cardboard packaging practically destroyed. One storage tray has a broken corner for which awesome customer service will be sending a replacement (in 1 month). Considering the price, these trays could be made a little more substantially as I doubt they will last the life of the weights. Adjustment of weights is very easy and convenient. Adjusting while the weights are IN THEIR TRAYS is imperative; works much better. Lifting/exercising with the weights proves stable with minimal "wiggling/shaking," which is a nice surprise. Getting the variety of weights without taking up so much space is Excellent.