Abstract: In a golf club head assembly a body member has a top-forward angled front face, the face comprising a plurality of generally forward-facing teeth. The golf club head assembly further comprises a loft angle adjustment mechanism attached to the body member for adjusting a loft angle of the face. The mechanism includes a hosel element releasably attached to a bar rotatably mounted to an upper side of the body member parallel to the face. The bar is rotatably journaled or mounted in a pair of bar supports attached to the body member. Set screws reside in threaded holes in the bar supports, the set screws operable to releasably lock the bar in a selected orientation relative to the body member, where the selected orientation of the bar corresponds to and determines the loft angle of the front face. The forward angle of the front face, the angles of the teeth, and loft angle of the face are jointly chosen to impart a pure rolling motion onto a struck golf ball.