TEKTON Long Fixed/Flex Head 12-Point Ratcheting Box End Wrenches each have 1 wrench size and 2 head styles. The double box ends are the same size and both are 12-point, but one side features a raised fixed head while the other has a ratcheting flex head. The fixed box end has a flush side to maximize surface contact with a fastener as well as a raised side for finger clearance and to fit into recessed areas. The ratcheting end reduces the need to re-engage the fastener repeatedly. The flex joint sweeps smoothly through 180 degrees without any set positions, allowing the wrench to access fasteners around obstacles. The 12-point box ends fit multiple types of fasteners, including 6-point, 12-point, and square. TEKTON fixed/flex head ratcheting wrenches are permanently marked in 2 ways: a high-visibility laser marking and a stamped marking. We make these wrench bodies from 6140 chromium-vanadium steel and heat-treat them to 42-49 HRC. The wrenches are abrasive-blasted to create a finely textured finish and then plated with a trivalent chrome process.