Made with solid steel ring construction for durability. Brush filaments are permanently anchored in the steel ring and uniformly distributed for even wear. Great for flat, curved, small and hart-to-reach surfaces. Soft and hard, converging animal hair bristles. Hard available in 1" (1/4" Trim Length) and 1-1/4" (3/8" Trim Length) diameters. Soft available in 1" diameter.
The 1-1/4" is a heavy-duty, double-thick brush, while the 1" is the standard thickness. Maximum operating speed: 15,000rpm.