a structurally improved putter is disclosed . the putter has a cylindrical head suitable to easily knock the central portion of a golf ball regardless of the putting postures of a golfer while putting . the head is provided with an internal cavity suitable to transmit the putting impact and vibrations of the head to the golfer &# 39 ; s hands through the grip without failure . the cavity also allows the golfer to precisely feel both the putting senses and rolling directions of the ball thereby improving the putting precision of the golfer . the above putter head is provided with weights installed in the cavity . the weight of the above putter is easily adjusted by changing the number of weights .