Practical: This no-flat substitute tire features a wheel diameter of 25.5 cm and a saw-tooth tread for the ideal balance of traction and maneuverability. Solid: This sack wheel is designed into a solid construction that you don’t need to worry about puncture or deflation of the tire. The solid tire can save you from undesirable and frequently pumping up, which is durable for long-time service and can save you from much trouble. Sturdy & Smooth: This sack truck tire features heavy-duty ball-bearing shaft, grease fitting and 16 mm axle bore. Well-adapted: This sack truck wheel can adapt to various ground situations, such as sand, mud, lawn & garden.