This is an authentic OEM sourced part which is specially made for use with Makita power tools. It is an identical replacement for a missing or a faulty steel ball that was installed on a new unit. This is a standard hardware which may have multiple applications, please make sure to check the appropriate diagrams of your model for the corr...Read moreect location and application of this hardware. Keep in mind this high-quality component is made of durable metal and is sold individually.