SK Hand Tool 80019 Wrench Set - X-Frame Metric Ratcheting Handtools, 12 Pc. Fractional Tool Kit. Lowest Arc Wrench Tool Performance Hand Tools: ratcheting wrench tools handle up to five times the ANSI spec for torque. Allows breaking most stubborn bolts and fasteners. Solid I-Beam handle distributes the force evenly to extract the nuts Comprehensive Socket Wrench Kit: socket case carries set of 12 wrench tools. Handtools come in 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm and 19mm sizes Metric Tools Functions: wrench tools employ lowest arc swing of 1.7 deg., making it easy to reach fasteners. Revolutionary 6 pawl technology works in pairs, so one pair is always engaged Impact Wrench Features: metric tools feature six dual opposing pawls that make them different from the traditional wrenches. With SKs SureGrip design on the open end of wrench, bolts do not slip or round at the corners High Strength Wrenches: socket wrenches are compactly designed to work with maximum precision and power even in the most confined areas. Power tools can function in 216 ratcheting positions, ensuring maximum strength and minimum rounding