Allen offers the broadest line of fractional (SAE/Inch) and metric hex keys and sets in the industry. When you need a hex product, think Allen, the original manufacturers of the Allen brand wrench. Product detail: Number of Keys: 15, Set Size Range Min: 0.7, Set Size Range Max: 17, SAE/Metric: Metric, Set Included Storage: Metal Box, BALL PLUS Ball End: No, Length Format: Short Arm, Key Sizes: 0.7, 0.9, 1.3, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, 14, 17, Magnetic: No, Finish: Black Oxide.