This all terrain dinghy wheel measuring 280mm in diameter has an internal air filled inner tube surrounded by a chunky solid rubber tire. This particular 19mm bore sized tire features a diamond pattern thread and has a capacity of 150kg. Use this pneumatic wheel for low speed applications, such as trolleys and wheelbarrows. *PLEASE NOTE TYRE SIZE DIAMETERS CAN VARY DRAMATICALLY BETWEEN MANUFACTURERS AS PLUS OR MINUS 25mm* 280mm Pneumatic Trolley Wheel with Diamond Tread