OnTrack Original Since 1998.
Convert any discus ring into an official NCAA/IAAF-size hammer ring in less than a minute. Guaranteed never to crack like the fiberglass type. It will never rattle or bend like the aluminum type. Easily portable for indoor use. Meets 2011 NCAA rule. Can be used as a portable shot ring! Call for more information.
[ Printed Catalog : Page 58 ]
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