The Crimper Brush allows you to find better grip for smaller holds. The brush is designed for smaller indoor and outdoor applications. It is made from natural wild boar hair for long-lasting durability and gentle brushing that doesn't damage or polish the rock. The longer bristles at the front increase the brush's service life. The shaft is made from recycled plastic and has an ergonomically designed handle for optimal grip. The angled brush head also ensures easy handling. The Crimper Brush comes with practical sandpaper on the back of the shaft to keep skin and nails in perfect condition.