1.It is made of high quality material, strong and durable.Wheel shaft side is smooth, smooth rotation, does not get stuck. 2.Unique fastener design, location fastening, accurate and convenient. 3.Allows quick and easy string maintenance. 4.Stainless steel roller, very hard, rope can be quickly popped out. 5.This is a good tool for archery enthusiasts.High quality bow bowstring server archery bowstring Supply thread cord tool manual extend string Shooting services accessories Color: Black Material: metal+plastic Package Contents: 1 x bow and arrow winder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.