The GrillGrate Valley Brush is specifically designed for use with your GrillGrates. It is a bristle free, double helix design with dual heads that allows you to clean two valleys at once. It is 15 inches in total length with a 9.5-inch handle, and 4-inch brush heads. The brush heads are made of durable galvanized steel springs. Perfectly suited for grate cleaning with all types of surfaces including: stainless steel, aluminum, anodized aluminum, cast iron, and porcelain enamel cast iron grates.