Wooden Ear Plug with Trojan Greek Helmet Design Sold As a Pair -00 Gauge -1/2" - 9/16" - 5/8" - 11/16" This is a flared plug set and may need some lubrication to insert in the ear. The gauge we have set is the narrowest part in the cetre. The outside or flare is approximatley 3mm higher. There may be some variance in color and tone, due to the product being made from raw, natural materials. These natural organic plugs are intended for healed stretches. Wearing natural organic material helps reduce bad odor and ensure safety and comfort for people with allergies. Do not expose to direct sunlight and keep in a dry and well-ventilated area. Organic material is heat and moisture sensitive and can warp or crack if not cared for properly. Natural organic wooden product so biocompatable Fulfilled by Amazon and Fast Delivery