Same hard-nylon toughness as the 19mm version, but with a 25mm bore to match your existing axle or cradle pin. Viking 91115, blue, 4in x 4in face. If you've got an aluminium boat or trailer and your current roller has gone soft or started cracking at the edges, this is the direct swap. The nylon holds its shape under repeated loading so the boat stays centred on the cradle instead of drifting off to one side
| brand | Viking Rollers |
| product_code | 91115 |
| size | 4in x 4in |
| bore_size | 25mm |
| material | Hard Nylon |
| colour | Blue |
| type | Wobble Roller |
| suitable_for | Aluminium boats, aluminium trailers |