Kobalt's ratcheting wrench set contains 20 popular metric and SAE sizes to help complete most any job. These wrenches offer a well-fitted open end and 12-point box end which allows work on most fasteners, including rusted or rounded. These wrenches features a 90-tooth ratcheting mechanism and 4-degree arc swing, allowing work in the smallest of spaces. Each wrench is made from chrome vanadium steel and is heat-treated to provide strength and durability, and is covered by Kobalt's lifetime guarantee. Kobalt's 20-piece ratcheting wrench set includes the following metric and SAE sizes: 6, 8, 10, 12, 13, 14, 15, 16, 17, 18 mm and 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16 and 3/4-inch Constructed of chrome vanadium steel and heat treated for strength and durability with a professional grade, high polish finish 12-Point box end allows work on 6-point and 12-point fasteners 90-Tooth ratcheting end provides 4° of arc swing Zero-degree box end allows access to narrow work spaces where a ratchet and socket can't fit Hard-stamped size callouts and color-coded stripe make it easy to identify metric (blue) and SAE (red) measurements Meets or exceeds ANSI specifications Hassle-free lifetime guarantee Finish: Polished chrome Sub-Brand: N/A Length Measurement: Set Size: Set Weight (lbs.): 3.20 Arc (Degrees): 4 Case Type: N/A (no case) Degree Offset (Degrees): 0 Flexible Head: No Handle Design: Standard Head Design: Standard Material: Steel Measure Type: Standard (SAE) and Metric combination Number of Teeth: 90 Points: 12-point Reversible: No Set/Individual: Set Stubby Wrenches Included: No Total Number of Pieces: 20 Universal: No Warranty: Lifetime ANSI Compliant: Yes CA Residents: Prop 65 Warning(s): Yes UNSPSC: 27111700