IAFF Certificate No. E-17-0904
Hammer conversion circle, designed and manufactured in compliance with WA international athletics regulations. It consists of two full circles, a metal one manufactured with a 3 mm metal plate made of four segments cut with laser and another one made of birch plywood. They are connected to each other with the purpose of reducing the inner diameter of the throwing ring from 2.5 m to 2.135 m of diameter. The assembly is finished in white, the metal part with a polyester powder coating and the plywood board is lacquered.