These lawn aerator clamps with spikes are practical accessories for your lawn roller and are ideal for aerating the lawn. Practical spike: The lawn aerator with the practical spike on the clamp is meant to help in reducing soil compaction and allow water, air, and nutrients to get to the root system for a greener and healthier lawn. Durable material: The grass aerator is made of durable iron and is built to last. The iron frame goes towards stability and sturdiness as well. Wide applications: The clamp with spike can be added to a rolling lawn aerator for aerating prior to seeding or fertilizing. It is the ideal tool for gardeners who want to create a lively lawn. Good to know: To make assembly as easy as possible, each product is delivered with a manual. The lawn roller is not included. Colour: Black Material: Iron Size: Ø 30 x 2.