FLEXIBILITY – Made from carbon steel crimped wire material, and you get 6 different wire brushes. So you have a suitable wire brush for all cases. PACKAGE INCLUDED-- With round shank 6mm; 1-1/2“，1-1/2”，2“，2-1/2”，3“ wheel brushes / 2"cup brushes VARIOUS APPLICATIONS--Removing weld scale spatters, extra-heavy rust and corrosion, paint and dirt and glitch from metal and other surfaces. Fit DEWALT BLACK+DECKER TACKLIFE Bosch Drill PORTER-CABLE Hi-Spec Genesis Ryobi Stalwart Pink Power Hitachi WORKSITE UBANTE