Prevent electrostatic damage.
Helps protect your electronics from accidental electrostatic discharge (ESD) damage during repairs. Ground yourself while working on sensitive electronics to prevent static charge build-up. Custom manufactured by iFixit for "American" sized wrists. Most anti-static wrist straps are made for use in manufacturing throughout Asia, and do not pass our ergonomics test, if they fit at all! "Rapid static dissipation by a wrist strap ground is required to prevent voltage spikes. Simple movements such as lifting one foot off the floor or raising one arm from a conductive table mat may change body capacitance by as much as 10% to 30%. Uncontrolled, the capacitively created voltage may reach several hundred volts or more.