5 New Brass Wheel Brushes & 3 Mandrels. This is a new set of 5 brass wire wheel brushes. These brushes are great for cleaning all brass and copper. You receive: 1 Brass wheel that measures approximately 3" (76 mm) in diameter 1 Brass wheel that measures approximately 2 1/2" (63.5 mm) in diameter 1 Brass wheel that measures approximately 2" (51 mm) in diameter 1 Brass wheel that measures approximately 1 1/2" (38 mm) in diameter 1 Brass wheel that measures approximately 1" (25.5 mm) in diameter 3 Mandrels that each have 1/4" (6.5 mm) shanks.