Black Diamond Ratcheting Wrench Set, Specifications: SAE and Metric Measuring System, 72 Tooth Ratchet Design, 15 deg Offset Head, Chrome Vanadium Steel, Number of Pieces: 20, Includes: (1) 6 mm, (1) 8 mm, (1) 10 mm, (1) 12 mm, (1) 13 mm, (1) 14 mm, (1) 15 mm, (1) 16 mm, (1) 17 mm, (1) 18 mm, (1) 1/4 in, (1) 5/16 in, (1) 11/32 in, (1) 3/8 in, (1) 7/16 in, (1) 1/2 in, (1) 9/16 in, (1) 5/8 in, (1) 11/16 in, (1) 3/4 in Wrenches and Storage Bag