Dimensions 7-1/4 inch Width x 5-1/4 inch Roller. Inner roller is 4 inch wide. Attachment bolt is 1/2 inch. Fits 4 inch wide center roller bracket.
This boat trailer roller material 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.Bow Stops protect and cushion boat hulls when secured against bow stop brackets.
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.Bow bell assemblies help to center the boat and prevent bow to bowstand contact.