REC Components has matched its patented nickel titanium shape-memory alloy frame with a highly polished, extremely smooth and wear-resistant ceramic ring. Each CERECOIL guide features a precise groove allowing it to be held by the NiTi frame, securely locking it in place for the first time mechanically. These guides are completely corrosion proof in any environment, flexible, and extremely light. Available in sizes 5 through 40, in Single and Double foot styles, in both Natural and Black Pearl finish.