DURABLE: This tubeless, puncture resistant replacement sack truck tyre is made from tough polyurethane for durability. FEATURES: With a 16mm axle bore and sealed, long life ball bearings, the tyre size is 4.10/3.50 x 4" with a 260mm (10") diameter. LOAD CAPACITY: It has a maximum load of maximum load 136kg (300lbs) .