1/2&rdquo; Ratchet Drive Telescopic Design (12&rdquo; to 17.5&rdquo;) Telescopic Locking Design Allows for the Following Lengths: 12", 13", 14", 15, 16.5 and 17.5" Back Head Ratcheting Switch for Tightening or Loosening Made of Vanadium Steel with Rubber Dip Molded Handle