This 260mm dinghy wheel has an internal air filled inner tube surrounded by a chunky solid rubber tire. This particular 20mm bore sized pneumatic wheel features a diamond pattern thread and has a ball journal bearing. With a load capacity of 100kg these tyres are suitable for low speed applications such as trolleys.** BORE SIZE IS TO SUIT 3/4 SHAFT RATHER THAN 20mm ** 260mm Pneumatic Wheels Diamond Tread with Ball Journal Bearings