Shaped like a triangle, this 12 inch three-sided brush cleans in between the cooking grates and in tight spaces at the edges of the grilling surface. Also available in a 21" length. Weber recommends that grillers check their grill brush for loose bristles and excessive wear on a regular basis. Brushes should be replaced if the brush head is burned, split or distorted from heat or if any loose bristles are found on the brush or grill. Always inspect the surface of the cooking grate for wire bristles and other residue or material that may be dangerous if ingested, before placing food on the grate. Weber recommends purchasing a new stainless steel grill brush at the beginning of every Spring.