6X SCSTool PTBSS-16 1" Stainless Steel Power Tube Wire Brush Made in USA Lot of six SCSTool PTBSS-16 stainless steel power tube brushes for general de-burring and cleaning operations Brush diameter is 1 inch x 1 in long and overall length is 3 1/2 inches Bristles are .006 in stainless steel, single spiral Stem is 7/32 in electro-galvanized steel Maximum 2,000 rpm clockwise only These are top quality Industrial Duty brushes made in USA