This is available as a set that contains two pieces. The idle gears are OEM Hitachi parts directly sourced from the manufacturer for use in impact drivers and impact wrenches. They attach to the spindle and are made of metal. During the installation process, a screwdriver might be needed to replace these parts. They may become broken or stripped and will need to be replaced.
This is a genuine manufacturer-sourced replacement part which is specially designed for use with Hitachi power tools. It is an identical replacement for a missing or faulty screw that was installed on a new unit. This is a standard hardware which may have multiple applications, please make sure to refer to the appropriate diagrams of your...Read more model for the correct location and use of this component. Keep in mind this high-quality screw is made of durable metal and is sold individually.