A good selection of popular sized strong steel hex keys of varying lengths all with a black finish.
 
Sizes (long reach) 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16 & 3/8″.
 
Sizes (standard length) 0.5, 1.3, 1.5, 2, 2.5, 3, 4, 5, 5.5, 6, 7, 8 & 10mm.