HYPERBELL works with almost all regular and adjustable dumbbells. However, there are some limitations. The length of the dumbbell handle needs to be at least 4.5" long. Most dumbbell handles are approximately 6.0" long. The diameter of the dumbbell handle needs to be less than 1.5" at its thickest point. The foam insert inside the HYPERBELL will contour to both straight and curved dumbbell handles.
HYPERBELL works great with Bowflex SelectTech Adjustable Dumbbells (552 and 1090).
HYPERBELL does not work with PowerBlock Dumbbells or Nuobell.