[ Features ] Wheel Dia: 125mm / 5.0inch; Wheel Thickness:30mm / 1.2inch. [ Load Capacity] 140kg / 308lb per wheel; Package Content: 2 x PU Caster. [ Mounting Size ] Install Type: M12 Threaded Stem; Thread Dia: 11.9mm / 0.47inch; Thread Length: 30mm / 1.18inch; Mounting Heigth: 160mm / 6.30inch [ High Quality ] Polyurethane (PU) wheels offer the elasticity of rubber wheels combined with the toughness and durability of metal wheels. [ Widely Used ] Perfect casters for work benches, instrument cases, art tables, coffee table, plant stands, bookshelves, shoe bins, shopping carts and so much more.