Shaker weight 5lb

The selected object is a Shake Weight Dumbbell, specifically the 5 lb (2.3 kg) gray men's/strength version. It utilizes "Dynamic Inertia" technology, relying on a mechanical spring mechanism at both ends to bounce the weights back and forth when shaken rapidly.Key FeaturesMechanism: Mechanical oscillation via internal springs on both ends.Power Source: Fully manual and non-electric.Intended Use: Rapid muscle stimulation for toning arms, shoulders, and chest.