Feed a struggling lawn from the roots up with this 21 in. manual rolling lawn aerator, a push tool that opens compacted soil so grass can drink in water, air and nutrients. The 21 in. roller carries 33 rustproof spikes, combining longer and shorter spike plates to work the ground efficiently across a wide path. What sets it apart is the fillable drum: load it with sand or stone and the added weight drives the spikes deeper for more effective aeration and stronger root growth. A 51 in. handle keeps you upright, sparing your legs and lower back over a longer session, while the anti-slip grip gives steady control. Picture rolling across a hard, patchy backyard in spring, then seeding and watering into freshly opened soil for a lusher lawn by summer. It works in dirt, sand and clay across gardens, yards and cropland, so it earns its keep season after season. Assembly is tool-free thanks to a spring-button handle that connects bottom to top, and the included instructions make it quick. Sturdy galvanized-steel spikes resist rust and hold their shape. Simple to push and easy to store, it is a dependable way to keep turf breathing and looking its healthiest all year.