Mongoose "The Wedge Kit" Bowling wrist support The Wedge is designed to give you the edge on your competition with more lift, more roll, more revs, = more wins. By cupping your wrist for any lane conditions. The 1/2" Wedge is designed to cup your wrist for those times you need that little extra roll and lift. Used for medium to moderate oily lane conditions. The 3/4" wedge cups your wrist for those oily lane conditions. That requires that extra roll and lift. The 1" Wedge cups your wrist the most for the strongest lift and roll in the heaviest of oily lane conditions. 100% Made in USA.........