The Acer MC4 is a modernized classic designed with the average Tour or better player in mind. After extensive research, it was discovered that the average tour player has a 3º inside/out putting stroke. To encourage the player takes the putter back in the correct arc the rear flange was intentionally angled to provide a visual cue to assist in maintaining this path. This model features a higher toe profile, a non-offset gooseneck hosel and subdued alignment mark better golfers will appreciate. The face is CNC milled to ensure the faces are a perfectly flat striking surface and manufactured with a slightly heavier weight (350g) to allow for various custom lengths.