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Metal rolling handles are durable and spin freely.
An economical option for training the supporting grip is a thick rolling handle. Typically 2.375 inches in diameter, the key to this device is an offset weight attachment affixed to the center of the handle on bearings. The bearings allow the handle to rotate as a weight is moved, making it difficult to assist the supporting grip by flexing the wrist. This feature aligns the force of pull on most exercises with the weakest point of the supporting grip, where the fingers tips meet the thumb.
Rolling Handle
