The Black Diamond Hex Key Set is a 26-piece kit that covers both SAE and metric sizes for fastening and adjustments across a wide range of equipment. It includes 13 SAE keys from 0.05, 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, and 3/8, plus 13 metric keys in 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 9mm, and 10mm. With both measurement systems in one set, it’s an easy way to stay ready for common hex fasteners in the shop, garage, or on the jobsite.