Includes: #8 (14mm & 9/16"), #9 (15mm), #10 (16mm & 5/8"), #11 (17mm & 11/16") and #13 (19mm & 3/4") Equipped to take on a larger range of bolts in engines, furnaces and appliances, It features both ½ inch drive and hex external drives, get the right grip for optimum torque. Machined with precision from hardened steel, and built to last. Black oxide coating prevents corrosion, while the blow molded CASE keeps it organized Made in USA. Includes: #8 (14mm & 9/16-Inch), #9 (15mm), #10 (16mm & 5/8-Inch), #11 (17mm & 11/16-Inch) and #13 (19mm & 3/4-Inch). Machined with precision from hardened steel, and built to last.