…Another approach is to facilitate “locking” the putter shaft to the left, or leading, forearm during the stroke, similar to Matt Kuchar ’s putting method. The AccuLock Ace putter from BioMech Golf accomplishes this by attaching a long shaft at the rear of a big putter head. The shaft leans forward dramatically, allowing it to nestle comfortably along the inside of the left forearm.

WSJ – A Look at the Year Ahead From the PGA Merchandise Show