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Smrtft Nuobell 50-Pound Classic
The twist-lock handle of the Smrtft Nuobell Classic dumbbells is the fastest adjustment mechanism I tested, allowing you to change weight in seconds by simply twisting the handle in either direction. Numerical dials display the current weight as you twist, locking in each 5-pound increment with a satisfying click.
While similar in concept to the rotating handles of the Core Fitness Adjustable Dumbbell Weight Set, the Smrtft mechanism is far superior, with a much smoother, precision-quality feel. The knurled handles provide a firm grip, and the interlocking plates remain nice and snug during workouts. If a speedy, one-handed operation is worth an extra $100, look no further.