It is an authentic manufacturer approved replacement item that is specially produced for Milwaukee drills. This metal bearing helps to secure intermediate pinion gear while allowing it to spin freely with minimal friction. Over time this part may wear out and restrict movement, if this happens it can easily be replaced. Please note this high quality item is sold individually.
This is an authentic replacement part manufactured for use with Milwaukee drills. The metal gear case is commonly used to house the gears that drive the chuck. This gear case is available as an individual replacement part, please see model diagram for associative parts.