555373 Shaper/Router Shield
Shaper/Router Shield Puts Safety Back Into Shaping and Routing

This see-through shield clamps around your Mark 7 or Mark V quill with a single setscrew and provides both front eye protection and a rear brush that can be adjusted to meet the top of the fence or your workpiece for added dust collection efficiency.
Standard with router and shaper packages.
Note: Not for use with 10-ER, Mark 2 or older-style Mark VII.
This is just one item out of the shaping package seen below
Helps You Create Beautiful Decorative Trim On Curved or Straight Edges
Create Decorative Edges, Fancy Trim and Precision Joinery With This Professional Shaping Package
While the molder produces great straight-line cuts in the surfaces of workpieces... and the dado is the tool to reach for when you need square-edged dadoes or grooves... the shaper is best for decorating edges or making edge joints on straight or curved edges.
In fact, rub collars and starting pins let the shaper tackle irregular shaped edges as easily as regular ones.
Plus, the shaper even lets you work on the inside edges of cut-outs such as round or oval picture frames.
Note: Not for use with 10-ER, Mark 2 or older-style Mark VII.