What are rubberized dumbbells?

The rubber-coated dumbbell is provided with a rubber bonding structure on the surface of the bell head, and the bonding structure is convex or concave, so as to increase the surface area of the bell head and the rubber bonding, and increase the bonding strength.

Equipment features
The projections or depressions may be raised or depressed points or lines or surfaces; projections and depressions may be provided separately or simultaneously. Various patterns consisting of protrusions or depressions are also possible.
Rubber-coated dumbbells are generally hexagonal or twelve-pointed design, placed stably, and can be used for push-ups, which are common in gyms.