Kaos Black Silicone Hollow Plugs are made with the highest quality implant grade silicone and come in pairs, ranging in size from 6G (4mm) to 1 inch (25mm). The 10mm wearable surface makes them soft and squishy, while the hollow back design creates a lightweight, comfortable fit. These plugs are manufactured in the USA and washable with a mild non scented antibacterial soap and water. Not suitable for ear stretching.