Full 22-Inch Wide Drum with 2-Inch Spikes – Bigger, Deeper, More Efficient: This upgraded aerator comes with a 22" galvanized steel drum — 22% wider than standard 18" models — covering more lawn with each pass. Equipped with 2" long hardened spikes to break through compacted soil and boost root oxygenation. Patented Nail Strip System – Pre-Assembled for Instant Setup: No more spending 30 minutes screwing in 60+ spikes one by one. Our patented system includes 6 steel nail strips pre-mounted on the drum. Just align the strip holes, tighten with the included wrench or your drill, and it’s ready to roll. Tighten Loose Spikes on the Spot – Wrench Included for Quick Fixes: If a spike starts to loosen while you're aerating, there's no need to stop and take things apart. Just reach for the included T-style socket wrench and tighten the spike right from the outside of the drum. No tools to search for, no disassembly, no delay — just tighten and keep rolling. Dual Bearing System + Fillable Drum – Designed for Real-World Tough Soil: Smooth-rolling dual ball bearings on both sides prevent wobbling and reduce drag — even on uneven terrain. The hollow drum can be filled with sand or gravel to increase weight, helping the 2" spikes penetrate hard-packed soil with ease. The product requires assembly. Our product has user-friendly assembly tools and instructions, making setup a breeze. US Patent Number: D1074335 evtmag 22-Inch Patented Lawn Aerator, Rolling Aerator Lawn Tool, Heavy Duty Lawn Aerator Tool, Grass Aerator & Garden Tools for Aeration & Soil Health