This 34013 dusting brush is articulated, mean that the neck is adjustable. By turning the end you can have it face straight, at a 90° angle and everything in between. This rotation makes it easy to clean places like the dashboard of a vehicle or when working overhead. It comes in handy for areas that conventional dusting brushes don't fit. Like other dusting brushes, it is best used on fine finishes and uneven surfaces. The 34013 articulated round dusting brush has a nylon fill and fits 1.375" connections.