Hex Key 10 Piece MM Hand Tool Kit Allen Wrench Short Arm Assorted Key Ring Set Go to amazon.com Related posts Thing need consider when find 10mm wrench keychain? Which is the best allen wrench keychain? FeatureBrand New in Retail Package.Complete Set DescriptionThis is the perfect hex key for your needs, with 10 different keys all on one single key chain. Features & Specifications Sizes 1.5mm 2mm 2.5mm 3mm 4mm 5mm 5.5mm 6mm 8mm 10mm.