Regular CrossFit® (RC) 4.5 mm 2.0, 4.0, 6.0 mm. Narrow CrossFit® (NC) 3.6 mm 2.0, 3.5, 5.0, 7.0, 8.0 mm. Available Collar Heights. The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.
