Strength Ball - Science Museum – Build up your arm muscles with this power ball!
Manufacturer: Gadgets & Gizmos
Product Ref: 5500/9951650
Strengthen your arm muscles with this nifty little device. Pull the red cord to get the gyroscope inside the ball rolling, then by holding the strength ball and spinning it with your wrist the revs will build up and improve your arm strength. Great for sport and circulation - challenge yourself and others to achieve the highest revolutions per minute - and get a workout at the same time! Comes boxed.


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