Increase your strength, hit muscle-building goals and achieve the mass you want with the PowerBlock Pro EXP Stage 1 adjustable dumbbells with a weight range of 5lbs-50lbs (2.3kg - 22.7kg) per hand. Designed to help you make the most out of your strength training and weightlifting sessions, these easy-to-use, compact dumbbells with a heavy-duty construction and a space-efficient design can replace 16 pairs of dumbbells or 825lbs (374.2kg) of free weights. With an open handle design, they ensure a firm, yet comfortable hold, whereas a selector pin guarantees quick weight adjustment. The dumbbells offer two 2.5lbs (1.1kg) chrome weights per handle to micro-load weight adjustments. Plus, the set is expandable to 70lbs or 90lbs (31.7kg or 40.8kg) per hand.