Quantity: You can do your own little DIY ideas,and don't worry about buying too many materials,as it has 25 PCS per pack UL certification: Male plugs 8 Amps and 125 volts,female plugs 6 Amps and 125 volts,as commercial grade plugs,can be used indoors and outdoors Simple operation: Through a simple sliding cover switch,the positive and negative poles are distinguished,and the SPT-2 wire and the pin tip inside the plug can be used Connected directly: Male and female plugs can be connected in parallel.Use them when your wire length does not meet your needs.You can customize the wire to any length you want Perfect replacement: When your electrical plug is damaged,this is a good opportunity to use it in place of the original plug