SME Self-Healing Windmill. Made with the most durable self-healing material on the market the Windmill sits on top of a solid steel frame and will spin when struck Rated for all calibers No assembly required just stick in the ground and start shooting Specifications for SME Self-Healing Windmill Target: Manufacturer: SME Fabric/Material: Solid Steel Frame Package Contents: SME Self-Healing Windmill Target SME SME-SHW: Self-Healing Windmill