Odyssey o works superstroke 20 9 putter whiteblackwhiteodyssey have introduced a new putter insert that will undoubtedly measure up to their stronomic and white hot classics o works superstroke 20 9 putter is a brilliant combination of stainless steel hinges co moulded into a thermoplastic elastomer feel layer resulting in a hybrid insert that delivers the sound and feel of a metal face and the firmer longer distance you expect from a soft insertnotable advantagescallaway is focused