Features: Practical tool: These adapters can help you to solve the problem of mismatched plugs and wall plugs, no need of rewiring the house socket. Please note that do not overload plugs and sockets. Easy to use: This dryer adapter can easily achieve the 3 prong to 4 prong transfer action, plug and play. Contains multiple models to help meet most of your adapter needs in normal life. Specifications: Material: copper coated wires, flame retardant materials Color: yellow Package includes: 4 x Dryer adapter Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.