This slim line bottle brush is made of natural materials, so it's much more durable than synthetic and even more pleasing to use. The black end bristles get to the bottom of narrow vases, children's drink bottles, delicate champagne flutes and stainless steel straws and the plant-based fiber side bristles operate like a mini car wash. With twisted metal hand and loop at end for hanging to dry. Measures approximately 2 inches in diameter, 11.41 inches long.