Telescopes from 18-Inch to 23-1/2-Inch (457mm - 597mm) in 6 increments | 1/2-Inch driveConstructed of chrome vanadium for durability and strength | contoured cushion handle for max grip and comfortQuick-release feature and drive-end detent ball securely hold socket and enable easy removal72-Tooth reversible ratcheting mechanism produces a minimal sweep of 5 degreesMade in Taiwan Titan 12073 1/2-Inch Drive x 18 to 23-1/2-Inch 72-Tooth Extendable Ratchet..