From the Manufacturer.
The 12-Piece Metric X-Beam Ratcheting Combination Wrench Set by KD Tools utilizes a unique beam design that allows you to apply force to the flat of the wrench, cutting hand fatigue while increasing surface contact by more than 500 percent.
The longer beam also helps access remote fasteners.
The surface drive plus feature ensures a stronger grip on fasteners and increased torque, while the surface drive on the ratcheting box end reduces fastener rounding.
These 12 wrenches are recognized by the Arthritis Institute for reducing the risk of carpal tunnel syndrome.
They come in sizes 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, and 19mm, and KD Tools backs its wrenches with a lifetime warranty.
What's in the Box: 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, and 19mm combination wrenches with case.