3950SPKL/9 Stainless Steel Multi-Color Hex Key Set. Sizes: 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10 (9 keys total) Only the 4.0 and 5.0 sizes were used once. I purchased this for maintenance but didn't end up using it, so I'm selling it. This is a genuine Japanese import purchased from Amazon. Please note that the box is not included. Thank you for your interest! Thank you for looking.