Prevent Electro-Static Damage! This custom sized (for "American" wrists) coil corded anti-static wrist strap will help protect your electronics from accidental ESD damage during repairs. Discharges of static electricity to laptop circuitry can have catastrophic results. To prevent static charge build-up, it is important to ground yourself while working on sensitive electronics. Most anti-static wrist straps are made for use in manufacturing throughout Asia, and the wrist straps are sized accordingly. We had these wrist straps enlarged to ensure a more comfortable fit.