Jump In Double Jointed Roller Olive Loose Ring Gag Bit With Tongue ReliefGag bit with 70 mm rings and 17 mm mouthpiece in German Silver, an alloy offering relaxation and durability Acts on the horse's balance by encouraging it to rebalance and shift its weight onto the hindquarters The larger the rings, the stronger the gag action Olive shaped rings add an extra leverage effect Requires special cheekpieces and can be used directly, with bit connectors, or in a four rein setup