Rife Two Bar Hybrid Mallet Heel Shafted Putter Black (Right Hand, 33-Inch) Rife Putters with RollGroove Technology(TM), utilize less loft because of the friction or gripping created by the grooves on the face. The ball is gripped rather than chipped, held through impact, and then released into an immediate forward roll. The removable cylinders in the back of the two bars on the Two Bar putter allow the golfer to customize his or her putter depending on the speed of the greens. By positioning the bars directly behind and on both sides of the impact area the Two Bar putter is virtually impossible to miss hit and one of the easiest putters on the market to aim Since the two bars are hollow the rearward location of the weights produces a high moment of inertia and greater stability.