High-grade stainless steel material:Made of high-grade stainless steel material, no harmful substances and no residue. The surface is smooth and free of burrs. No need to worry about rust and safety issues. Ergonomically designed handle:High-quality polyamide material, well-designed for easy grip. Worm friendly:The smooth tool won't hurt the worms in your fertilizer, just plug in and spin for easy aeration. Simple installation & space saving: With only 2 parts in total, installation is quick and easy,which for convenient storage and transportation. Quality warranty:We will always stand behind our products to provide after-sales service to customers. If you have any questions during use, please feel free to contact us, we will solve it for you as soon as possible. SQUEEZE master Compost Aerator-Compost Turner and Mixing Tool-Compost Aeration Tool