This is a Lessmann steel tube brush with a W 1/2” male threaded connection. It is designed to mount to a longer female threaded rod to easily clean long 100 mm pipes, boreholes, and cylinders.
Wheel Brushes with fitted 6mm shank are for professional use
Lessmann Steel Wire Shanked Wire Brush 70x20x0.30
Semi-Micro Test Tube Brush, 9 Long - White Nylon, Twisted Wire
LESSMANN
Lessmann Lessman Steel Wire Shanked Wire Brush 70X20X030
Lessmann Lessman LES506130 Threaded Tube Brush 30mm Steel Wire
Satinating, polishing and smoothing Matting and texturing Round brush for satin machines Made in Germany
Lessmann 32334819 Round Brushes DRM 100 mm Wide 70 mm Tube 30 mm Steel Wire Rust-Proof ROF 0.20 mm bore 19.2 mm with Double Wedged Groove 27 x 6.2 mm
Strip brush - All industrial manufacturers
Test Tube Brushes - Cole-Parmer India
Wire End Brush Carbon & Steel Wire End Brushes