Abstract: An easily attached, universal performance enhancement device for existing golf putters. The invention comprises an “L” shaped body, made of a rigid, lightweight material. The device is designed to mount in front of and on top of an existing putter by clamping a clubhead between the face of the device and a set screw mounted on the underside of the device. The face of the device becomes the new striking surface, and provides improved tactile feedback and control of the golf ball. The top of the device provides alignment aids and also moves the center of gravity back away from the face and upwards from the sole of the existing putter. The threaded end near the back end of the device is used to house various weights or attachments which alter the overall weight, swing weight, and position of the center of gravity of the existing golf putter.