The Challenger SS is a putter originally debuted as a "Test Flight" disc during the 2017 Ledgestone Open. It is a more understable version of the popular Challenger putter, with a flat-top and rounded edge and comfortable grip.
 
Discraft Putter Line plastic was a hybrid of the original Pro-D base plastic to upgrade it for increased durability and grip. This 2021 update made the putters feel better for use in differing weather conditions and made it more of a mid-grade plastic blend.