Anti-static wrist strap with double line is an electrostatic discharge (ESD) protection device that is worn on the wrist to prevent static electricity from damaging electronic components or equipment during handling or assembly. It consists of a strap that is wrapped around the wrist and is typically made of a conductive material such as metal or carbon. The double line design of the wrist strap features two conductive lines that run parallel to each other, providing redundancy in case one line becomes damaged or fails.

Overall, the anti-static wrist strap with double line is a simple yet effective tool for preventing ESD damage to electronic components or equipment. It is an essential component of any ESD protection program and is easy to use and maintain.