Get Your Job Done Faster And Easier Aerators can be used in the spring or late fall, whenever the lawn"s moisture content is high. Plug aerators remove 3/4 inch diameter soil plugs from the lawn, allowing compacted soil to loosen up in addition to the benefits provided by a spiker aerator. Weight Tray Buckets Aeration Depth up to 2.5 Inches Galvanized Points Resist Rust 42 Inch: Single Handle that is Accessible from the Seat of a Lawn Tractor 40 Inch: Two Handles -One Near Each Wheel-Engage Before Use 10 InchPneumatic Tires 2 Sizes Available 40 or 42 Inch