General description Hex wrench is a tool with a hexagonal section, used to drive bolts and screws with an inner hexagon socket on the head. This tool is simple, small, and light, allowing either end to be used to stretch for advantage or gain torque. The set includes a series of quality precision hexagon keys in standard arm metric and long arm imperial. Technical specifications Material: Steel Package Contents: 30 Hex Wrenches Measurement allowed error: +/- 1-3 cm Other information Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product.