Mizuno Bettinardi A-02 Putter. Since 1990 Robert J. Bettinardi's putters have earned a reputation for extraordinary feel and precision. Milled from a single block of metal each Bettinardi is an engineering masterpiece. The A-Series is designed for the player that prefers the look and feel of a mallet style putter in their hands. The A-Series consists of two face balanced, Moment of Inertia, mallet-style putters milled from 6061T6 Aluminium. Each A-Series putter features a low, deep Centre of Gravity and Bettinardi's patented Honeycomb Face for consistent ball striking and the truest roll in the game.