Universal Spline geometry on sockets that can be used to turn Universal Spline, 6pt, 12pt, Star, square, and rounded hexagonal fasteners. 72 Fine Tooth 1/4" Dr. Flex-Head Ratchet Precise Ratchet Head flex tolerances, designed to keep head in desired position during use Push button socket lock/release mechanism 1/4" Hex shank to 1/4" Sq. Dr. Socket Adapter included for use of sockets with cordless drills and screwdrivers. Buy this Tool and Save $35.01 Off on a Sunex 1/4" Dr. 13 Pc. Universal Spline Socket Set With Mini-flex Head Ratchet for $15.99 after instant rebate with free shipping at Rakuten.com.