Rife Golf IMO Training Putter A new weighting innovation from Rife Putters. Positioned 100% of the putter head’s mass directly inline behind the ball giving the IMO trainer very high MOI and incredible stability. This makes swinging on plane automatic. No pulls. No pushes. Just dead straight. All aluminum putter head with 100% of the total mass concentrated in the middle from a front to rear direction. The USGA and R&A requires that a putter must be longer from a heel toe direction than from front to back. The IMO trainer is over this limitation measuring 2” wide and 4.60” deep and therefore not conforming and not suitable for use in competition. By concentrating mass in the center of the putter a golfer will naturally swing on plane. Also this center mass acts as a ramrod that continues thru impact which helps cure the #1 fault in putting…deceleration. Rife Golf Training Putter Features:- Material: injection mold aluminum. Face Plate: 6061 milled aluminum