Black Door No. 11 Duo Plugs. For individual or couples play. Graduated set for solo play or pair them for you and your partner simultaneously. Ready to explore, wanting to experience and enjoy anal play. These two, unique, plugs are designed specifically to help people ease into use. They each feature a unique design including a flanged base. It is recommended that one starts with the smaller plug and work their way to the larger one. The silicone material is safe, non-porous, and easy to clean. 2 Uniquely Shaped Plugs, 2 Wireless 3-Speed bullets. 5 in x 1.5 in & 4.5 in x 1.5 in. Plugs are 100% Silicone. Bullets require 6 LR44 Batteries (included). Warranty card and satin carrying bag included. Clean after every use with toy cleaner.