Armstrong 52-811 11mm 12 Point Full Polish Combination Ratcheting Wrench Ratcheting Box End with Reversing Lever Speeds the Removal / Installation of Fasteners Ratcheting Box End Incorporates a 72 Tooth Precision Machined Gear for a 5Degree Swing Arc Enclosed Ratcheting Box End Adds Strength By Reducing Dirt and Debris Infiltration Thin Walled, Low Profile Ratcheting Box End Allows Easier Access to Confined Fasteners Ratcheting Box End Incorporates a Radius Corner Design That Engages the Flats of the Fastener, Not the Corners, Providing Up to 15% -20% More Torque