Bore Brush Set, Handle Style Hex, Bristle Material Brass, Handle Material Stainless Steel, Brush Diameter 0.31 in, 0.39 in, 0.47 in, 0.59 in, 0.67 in, 0.75 in, Brush Length 3 in, Handle Length 1 3/4 in, Bristle Color Brass, Application Bearings, Ports, Tubes, Bristle Length 3/4 in, Brush Width 5/16 In., 13/32 In., 7/16 In., 9/16 In., 10/16 In., 3/4 In., Color Coding System No, Features 6 Piece Brush Set, Overall Length 3 3/4 in