The Keles Keyless Expander (KKE) is a rapid palatal expander that features a built-in activation arm. It stands out from other rapid palatal expanders by eliminating the need for a separate key, by its small size, and ease of use. KKE offers numerous benefits, such as comfort, increased treatment adherence, short treatment duration, and effective patient-friendly treatment outcomes. Available in 8mm, 10mm, and 12mm.