Feature: 1. Wide Application: Ribbed wobble roller is a universal accessories, applicable to various situations, such as boats, yachts, trailer and much more to better meet your needs.2. Function: The ribbed wobble roller is especially designed to help you in loading your boat onto your trailer while not scratching or damaging your boat, highly practical.3. Durable Construction: Boat ribbed wobble roller is made from superior PP material, sturdy and durable, high temperature resistant, not easy to , long lasting to use.4. Exquisite Workmanship: Ribbed wobble roller is produced with 108x75x19mm size with high accuracy process for , blue appearance is pretty and without burrs.5. Great Replacement: Wobble roller after elaborate manufacturing technology, delivering high reliability and stable performance, direct replacement for the old or broken one.Product Specification:Item Type: Ribbed Wobble RollerMaterial: PPOD: . 108mm/4.3inHeight: . 75mm/3.0inID: . 19mm/0.7inApplication: Boats, , yachts, trailer, etc.color: bluePackage Contents:4 x Ribbed Wobble RollerOnly 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.