It is one of the bearings for the armature, please make sure to check appropriate diagrams of your tool for correct location and use of this item. This replacement ball bearing is an authentic Metabo item that is made for use with grinders and sanders. It is designed to reduce mechanical friction between two connected parts. This sealed bearing is made from high quality durable metal and it is sold individually.
This is an authentic Metabo replacement part, sourced from the original manufacturer for use with drills. The handle assembly connects to the barrel of the drill and is adjustable to provide the best available grip. This handle is available as an individual replacement part, please see part list for related parts.