No matter how you use your hands, they will love this sturdy nail brush! Functional, classic and useful. Double-sided brush has long, softer bristles and short, stiffer bristles on the opposite side to get all those little bits of dirt out. Bristles are made with a natural, plant-based fiber. Handle is made with untreated beachwood that ages gracefully with use. 100% natural and biodegradable brush. Measures 3.75 inches long.