NICE COMBINAITION --Package include 1pcs bowstring serving jig and 1pcs string serving thread. The serving jig helps to install the serving thread tightly, protect the string effectively. PREMIUM MATERIAL--Archery serving thread made of high quality Polyethylene material, light but has strong tensile strength. Small Metal serving jig, easy to carry. GOOD PERFORMANCE-- Bow string serving jig designed to make the string serving thread to wrap better and tightly. String serving thread can be widely used to repair separated serving, protect bowstring.Worked perfectly when installing the peep site. DIMENSION--String serving thread has 3 strands weaving, length 120 yard/110m. Multi strand weaving material is more durable than other type serving thread. Metal serving jig W.2.6, L. 2.9, small and portable. WINDING EASILY-- To do a tied nock, turn several as needed, then finished with a tight square knot & burnt the ends.