30" or 60" OB Chains.  High quality, heavy nickel-plated obstetrical chains.  Convenient to use and easy to keep clean and sanitary.  Chain gives a good grip on the calf, but will not cause injury when being used to assist a cow having difficulty calving.  Chains are more sanitary than ordinary rope.  Can be used with O.B. handle. Constructed and tested to withstand 1200 pounds or more of pull.