Manufacturer part #: 16002 Dolly style allows bow of boats with a straight gunwale to hang from a specifically shaped handle fitting. Snug-fitting edge trim atop the handle fitting protects the gunwale gel coat. Type is suitable for the Optimist, Pram, Oppie, Blue Dragon, and more Tough, UV-protected, injection-molded ,through-bolted, plastic joint components. 1 1/2" square structural-grade, anodized aluminum with boat-friendly round corners. Delrin ball bearings in wheel hub result in easy rolling on rough surfaces or deep sand. Strong, 3" non-stretch, polyester sling. Boat-specific tube lengths provide a custom fit for each boat, enabling a balanced handle load and easy maneuvering All joint fittings are through-bolted and designed for increased torque stability Durable vinyl rub rail provides a soft surface for the boatÕs hull to rest on Easy dolly breakdown using the snap buttons on wheel shaft and tongue tube, as well as wing nuts on axle tube cross fitting. Pneumatic, non-corrosive, 16" x 4" wheels can be secured on wheel shaft with provided screws for added security. For soft sand conditions, tire pressure can be reduced to increase tire footprint. Proudly made in the USA.