Note: Handle not included, must be purchased separately. This scarifying roller rake effectively aerates your lawn while at the same time clears moss and thatch leaving only the live grass. The aerator consists of heads that bite into the lawn when pulled along, yet swing in the opposite direction when the roller rake is pushed. This helps it glide over the grass without making contact, being effective only where you need it to be. Smooth pendulum motion. Special hardened blades. No resharpening of blades required. Easy roll wheels for consistent height.