Kobalt's 28-piece combination wrench set contains eight (8) stubby wrenches and twenty (20) standard length combination wrenches. All wrenches have a 15 degree offset to provide clearance for your hands during use, protecting against scrapes and cuts. Kobalt's 28-piece wrench sets is constructed of chrome vanadium steel and is heat treated for strength and durability Eight (8) stubby wrenches include 12, 13, 14 and 15mm as well as 7/16, 1/2, 9/16 and 5/8-inch Twenty (20) standard length wrenches include 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 17mm as well as 1/4, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8 and 3/4-inch 15° offset provides clearance for hands during use 12-Point design of box end allows work on multiple types of fasteners including 6-point, 12-point, hex, star and square Hard-stamped size callouts help to quickly identify metric or SAE sizes Professional grade, high-polish finish Meets or exceeds ANSI specifications Hassle-free lifetime guarantee