Steven Raichlen Ultimate Grill Safe Cleaning Brush has both natural Palmyra and Safe-Scrub bristles. Safe-Scrub nylon bristles are the most durable bristles, and Palmyra bristles offer a natural, long-lasting way to clean. At an overall length of nearly 30 inches, the Ultimate Grill Safe Cleaning Brush gives you great leverage and keeps you safely away from the fire. Its removable 8-inch head makes it convenient to use.