Aluminium keels and soft rubber rollers don't mix. You end up with scuff marks you can't buff out. This 4½-inch keel roller in blue hard nylon is built for the job – firm enough to carry the weight, smooth enough not to mar your hull. Fits a standard 17mm trailer shaft. If you're running an aluminium boat or trailer and your current rollers are going soft, swap them before the next haul-out
| brand | JAYCAR |
| material | Blue hard nylon |
| diameter | 4.5 inches |
| bore_size | 17mm |
| profile | Keel |
| viking_part_number | 91312 |
| suitable_for | Aluminium boats and trailers |