The Wittner Medium Cello FineTune Pegs feature an enhanced design for keeping your string stably tuned. The FineTune pegs have a composite alloy exterior thats durable against frequent use. The peg box features a specific cog mechanism that prevents it slipping or turning by accident. This model benefits from no climate-temperment materials for reliability when gigging in venues of different temperatures. The FineTune pegs come in a pack of four and are a necessity for the serious touring musician.