This spring-governor is an OEM part which is designed for DeWALT and Black and Decker equipment. It applies tension on the wing screw. Over time it may wear out and stretch eventually requiring a replacement. It is made of a high-quality metal and is sold as an individual component. Refer to the appropriate diagrams for your model for the...Read more exact location and the correct application of this hardware. Replacing it is a simple task that does not require any special tools.
This is a genuine OEM approved replacement part made for use with a variety of power tools. This wing knob has multiple applications based on the tool. Please refer to diagrams for correct use. It is made out of plastic with metal and it is sold individually.