Good Luck, they are Hard to find as Sonic throwers horded the high weight 173+ gram discs and even the 160-165 grams were horded by players for causal catch discs all that is left for sale on sites are 150 class and lighter. The Disc went oop not due to popularity as the disc was popular more for a before round/league/tournament warm up catch disc. It was due to the fact the discs cracked during play so easy and were not durable and worth making. If Innova could not make the disc in anything other the DX,why not make one of the two lightweight plastics for the disc, the Starlite or the Blizzard Champion plastic to have the disc at the right weight for the disc. Only discs like them from Innova are the Hero Discs Innova makes for dog use but are PDGA legal all but the small 185 mold; that size=18.5 centimeters thus too small for disc golf as 21 centimeters is smallest you can make a disc golf disc.