- Overall dimensions (with bells): 5 inch width x 4 inch roller. Inner roller is 3 inch wide. Attachment bolt is 1/2 inch.
- This product is thermoplastic polyurethane elastomer(TPU), is one of polyurethane types.From the process, thermoplastic type used the injection type craft.
- Will not rust or will not mark your boat,will not flat spot.
- Designed to support the weight of your boat on the trailer,absorbs road shock.
- End bells ensure that the boat does not scrape against bolts or roller bracket.