Well they are a different color and one has a lock on it. It looks like it’s sold out right now though. JesSSSsica-Solid Silicone Ball Mouth Plug Mouth Mouth Stuffed Opener Game Equipment Toy (5 Styles) https://www.amazon.com/dp/B0924Y7VQX/ref=cm_sw_r_cp_api_glt_fabc_NN1PNP3EPVTH252BJK7P