B Bop Maple The MG B Bop At 16 "(405mm) Has A diameter of 16mm. All the B Series have a long straight taper going from the tip to the fulcrum area then continuing straight back to the butt. Featuring a precise and easy to control feel, the B Series excels as an ideal all-around drumstick; Suitable for all types of players and musical genres. Model Length Diameter B Bop 405mm 16mm B 405mm 16.5mm BB 405mm 17mm BBB 405mm 17.5mm