Milwaukee® hex key set, folding, measurement system: metric, 8 pc, hex drive, 1.5 2 2.5 3 4 5 6 8 mm hex, ergonomic handle, steel/aluminum, black oxide, 0.98 in H x 1.61 in W x 4.57 in L dimensions. Milwaukee® 48-22-2182 Folding Hex Key Set, 8-Key, 1.5, 2, 2.5, 3, 4, 5, 6, 8 mm Hex, 8 pc