Features: Multi rotate spool holder avoids line twist Compact and lightweight, easy to remove and install Adjustable spool width / spring-loaded tension control even ensures winding The suction cup at the bottom could adsorb on any smooth surface, especially the glass material with water over A time saver. It is so easy to use just set the tension bolt and start turning that quick and easy. A well designed quality built product. The winder line works very well with wide and narrow spools. Comes with a 3/8 inside. Bushing, can perfectly work with rope spools mono / braid thread that have smaller central diameter holes. Exchange Instructions: Tighten the wheel clamp at the end when winding a baitcater / trolling spool, loosen it while winding a spin spool and let the spool spin with the rotor. Easiest way to reel fishing line by yourself.You can carry it no matter where you go and get it on hand at any time as long as it is in your car. Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Material:Stainless steel and rubber Size:As the picture shows Package List: 1x Fishing Line Winder