Boners 6 Piece Cock Ring Set from EDC. This 6 piece cock ring set is perfect for every man who knows what he wants. No useless functions or options, just a quality cock ring in 6 different sizes. The penis rings are made of odorless silicone that is completely body safe and is very durable. The rings feel soft and smooth and are stretchy, so they always fit perfectly and are comfortable to wear. Thanks to the flat design, the rings will stay in place and will not roll off during use. Clean the rings after use with water and toy cleaner. Inner diameters: 2.6 cm, 3.2 cm, 3.8 cm, 4.5 cm, 5.2 cm and 5.7 cm e or approximately 1.02 inches, 1.25 inches, 1.49 inches, 1.77 inches, 2.04 inches and 2.24 inches. Video.