Features:Return the hook on the product shaft to the upper middle, and fold the wire to be stored in half and put it on the hook in the middle.Gently pull down the wire, so that the wire presses the trigger in the hook, and the wire can be retracted after the trigger is pressed.Do not pull the wire out violently, pull it out slowly and gently;Store and organize digital wires with a diameter of 0.3CM;Suitable for storing keyboard cables, mouse cables, headphone cables, data cables, etc.;Compact size and easy to carry; Specifications:Material:ABS+PCColor:Black,White,Green,Red,Blue,(Optional) Note:Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Automatic Wire Winder