Kaos Black Silicone Tunnels are sold in pairs (2pc) and made from implant grade silicone in the USA. With a soft and squishy build, they offer the highest quality silicone with a wearable surface of 8mm for sizes 6G (4mm) up to 1 inch (25mm). Cleaning is simple, with a mild non scented antibacterial soap and water. Do not use for ear stretching.