relative to fig8 a and 8 b comprising three points or corners 840 842 and 844 except that this embodiment does not comprise a platform 1180 see fig1 embodiments may or may not have material in a central portion of the head referring now to fig1 a and 15 b plan and perspective views of a three point or three lug embodiment are illustrated this embodiment is similar to those described relative to fig8 a and 8 b comprising three points or corners 840 842 and 844 except that this embodiment comprises a platform 1180 that has a diameter between the pitch diameter and a circle circumscribed by the corners of the head intersections of areas 812 and 814 embodiments may or may not have material in a central portion of the head referring now to fig1 a plan view of a three point or three lug embodiment is illustrated this embodiment is similar to those described relative to fig8 a and 8 b comprising three points or corners 840 842 and 844 except that this embodiment comprises a platform 1180 that has a diameter about equal to a circle circumscribed by the corners of the head intersections of areas 812 and 814 and the facets 502 504 506 between the corners are substantially planar however in alternative embodiments these surfaces may be straight or convex or any combination of surfaces embodiments may or may not have material in a central portion of the head referring.