This is a genuine OEM replacement part designed for use with a variety of power tools. It is made out of metal and it is sold individually. It is a standard hardware which has multiple applications based on your tool. You would need a wrench to tighten/loosen this nut.
This is a genuine OEM sourced replacement wrench which is specially designed for use with power tools. This component allows a user to secure or remove various hex socket head screws, it provides an identical replacement for a missing or damaged wrench which came with the new equipment. It is a high-quality part which is made of durable metal and is sold individually.