OPTP Pro Rotating Discs (Set of 2):

Rehabilitation and training tools for balance, stabilization exercises, range-of-motion exercises, push-ups and hip rotator work.OPTP Pro Rotating Discs^TM are effective tools for developing strength and balance. Use them while educating the hip rotators, increasing core strength, during push-ups, shoulder girdle exercises, stabilization exercises and range-of-motion exercises. Each disc is 11” in diameter and holds up to 300 lbs.

Sold in a set of two.