The Bearpaw Deluxe String Serving Jig has a worldwide reputation of excellent functionality and the highest quality. Many archers and pro shops use this device to easily and quickly create a center serving on strings. We are proud to have set a new standard with our Deluxe String Serving Jig. fine adjustment of the pretension centered thread guiding lateral threading function "easy-turn-around" feature by heavy steel components delivered with matching hardbox reel guide German Design German Funktionality German Quality