This saw tooth pattern tyre has 3.5" x 4" painted steel rims assembled by bolts & nuts with a centre bore for a 16mm diameter axle. It is a split wheel for easy tube removal & the axle bore is 50mm length of the offset hub. The maximum load for the tyre is 180kgs at a maximum pressure of 30psi. This tyre is for use with sack trolleys & hand trucks etc, it is not suitable for road vehicles. Ideal for use with Green Blade BB-ST300. Approx Size: 10" x 3.5-4" Maximum Load: 180kg Maximum Pressure: 30psi