Soft crimped flagged-tip salt & pepper bristles protect against abrasion while safely washing away dirt and grime. Great for wheels and grills. Bristles are resistant to acids and detergents. Thermal plastic rubber safety bumper prevents accidental scratches, dings and blemishes to car surface. Thermal plastic rubber grips reduce slippage, wet or dry. Absorbs shock to your hands. Ergonomic handle provides greater comfort and better grip control. Angled handle design protects hands away from surface.