Offering a weight range of 10-50lbs (4.5kg-22.7kg) per hand in 5lbs increments, the PowerBlock Pro 50 are compact and space-saving adjustable dumbbells for versatile and effective strength training sessions. Perfect for gaining more power and increasing muscle mass, these easy to use dumbbells feature a special Auto Lock lever to lock adder weights when the handle is placed within a weight stack. Smooth and quiet performance is ensured by urethane coated steel plates, whilst an ergonomically designed contoured rubber grip provides a firm and comfortable hold. To maximize the range of motion there is an open draft of the interior surface, and a weight selector pin guarantees rapid adjustments. Plus, a tether cord enables you to quickly attach the selector pin to the weight plates. The Pro 50 replace 9 pairs of dumbbells or 540lbs (245kg) of free weights and come in a set of two.