This brush measures 12” long so you can access the far reaches of your interior, even if your arms are not very long. The wooden handle narrows at the end so it’s very easy to control. A thick plastic band wraps around the bristles and the end of the handle to hold it all together securely. The bristles are genuine boar’s hair, tapered at the ends to allow for safe, scratch-free cleaning of glass and clear plastic. The brush’s head is 1” in diameter so you can cover more area with each stroke.