Features: Widely used: Used for installing and disassembling Hex-head screws and Hex-head Nut, charging drills, hand drills and other tool. Deepening the sleeve without fear of long bolts: More deeply fit and unscrew the Nut, which is convenient and quick. Hex handle slot design: Wide applications/stable clamping without slipping. Concave Hex deepening: It is convenient for the nut to be easily embeds in the sleeve, and the locking screw not slip. Complete specifications: 5.5-19mm for various specifications. Specifications: Component:Steel Type:6Pcs/15Pcs Length:Approx.80mm/3.15inch Package Includes: 1 Set Hex Nut Driver note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.