DANNYCO EXTRA-LARGE CIRCULAR BRUSHES Bamboo wood handle Lightweight Ergonomic handle with smooth edges Circular THERMAL ceramic brushes Four barrel diameters: 25 mm, 35 mm, 43 mm, 52 mm Ball tipped firm nylon bristles infused with tourmaline Vented ceramic barrel Also available in SMALL ( BMBOO-SC ), MEDIUM ( BMBOO-MC ) and LARGE ( BMBOO-LC )