The Lessmann Pointed End Brush With Shank has the following specification:

Wire Type: Steel
Diameter: 23mm
Wire Height: 25mm
Wire Gauge: 0.30
Max Speed: 18,000/rpm

The Lessmann End Brushes are fitted with a 6mm shank for cleaning and de-burring in hard to reach areas. They are ideal for the removal of paint and the cleaning of moulds and castings. Also for working on edges and recesses and the inside of bores etc.