The Snap-on 10-pc, 12-point Metric Flank Drive Plus Non-Reversing Ratcheting Combination Wrench Set, No. SOXRM710, is designed to provide up to 62 percent more turning power, with an open-end wrenching profile that "bites" into fasteners to prevent slipping and rounding. The uni-directional, 0 degree offset design incorporates technology to deliver more power in less lateral space. The ratcheting gear, with up to 80 teeth and 8-tooth pawl minimizes the swing arc needed to move fasteners in restricted spaces. This set of wrenches (sized 10 to 19mm) is manufactured, precision-forged and heat-treated in the Snap-on Elizabethton, Tennessee facility. The gears are cold-formed for improved durability.