Item Descriptions: 30pcs different size Internal hexagonal wrench kit This Set comes with the MOST COMMON Sizes in METRIC and STANDARD 1)15 pc Inch Size Long Arm Series Hex Keys (sizes from 0.028 - 3/8" SAE) 2) 15 pc Metric Short Arm Series Hex Keys (sizes from 0.7 - 10 MM) 3) Chromium-Vanadium Construction 4) Surface treatment: Chrome Plated/ Black Oxide Finished30pc Combo Hex Key Allen Wrench Set 5)Length standard length Pictures: