Weiler 44111 1/2" Nylon Tube Brush, 0.010 Fill Diameter, 3" Brush Part, 1/8" Stem Diameter And 8-1/2" Overall Length NYLON HAND TUBE BRUSHES feature a single continuous length of galvanized steel stem wire with a formed eye loop for convenient hand use. The single spiral of straight nylon fill allows for easy manual insertion and scratch-free cleaning of the ID. Engineered and manufactured to maximize performance and minimize operating costs. The use of superior construction, the highest quality materials and the most stringent manufacturing processes deliver the lowest cost-of-use and most consistent performance. Weiler brushes last longer and clean faster because they are made with the highest quality materials and are engineered to optimize performance.