Bit Bank International, Cartwheel 3 Ring Tongue Saver Gag -  Tongue Saver Cartwheel 3 Ring Gag Mouthpiece = German SilverCheeks = Stainless steel Size = Per listing title Diameter = 12mmTop Ring 35mm, Centre Ring 75mm, Bottom Ring 35mmThis bit is called a gag, but only acts to raise the head with light action, once beyond this point it will,

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