Feature: 1. Wide Application: Ribbed 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 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 roller is made from superior PP , sturdy and durable, high temperature resistant, not easy to , long lasting to use. 4. Exquisite Workmanship: Ribbed roller is produced with 108x75x19mm size with high accuracy process for , blue appearance is pretty and without burrs. 5. Great Replacement: roller after elaborate manufacturing technology, delivering high reliability and stable performance, direct replacement for the or broken one. Product Description Specification: Item Type: Ribbed Roller : PP OD: . 108mm/4.3in Height: . 75mm/3.0in ID: . 19mm/0.7in Application: Boats, , yachts, trailer, etc. color: blue Package Contents: 4 x Ribbed Roller 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.