Bass Men's Professional Style 100% Pure Bristle Firm 103 is Medium Rectangle Hair Brus featuring 100% Firm Boar Bristle. The handles are made with all natural hardwoods for optimum durability while maintaining a pleasing look. Due to the natural nature of wood, variations in handle appearances may vary between brushes. Bass uses Fine Hard Wood such as Maple and Oak and Bamboo to set the Bass Bristle in.