Spiked rolling lawn aerator drums in 18 x 51 in and 21 x 51 in sizes travel across the yard to loosen compacted soil so air, water, and nutrients can reach grass roots more easily. The 51-in handle lets you walk upright while pushing, helping reduce back strain during longer passes. Galvanized steel spikes are 1.3-in long to penetrate the turf, and the drum holds 5.5 or 6.8 liters of sand or stone to add weight so spikes dig in more effectively. A detachable handle with spring button allows quick assembly, removal, and storage in limited space, and the non-slip, comfortable grip helps keep hands steadier during use on different soil types such as sand, dirt, or clay.