Bosch TE600 TE 600 Professional Plunge Base fits Routers GKF 18V-8 GKF600, This is brand new, ex display. the plastic guide is missing (this is circled on the box).
 
Transforms the GKF 600 professional into a smooth lightweight plunge router. Connectable with guiderail adapter, circle adapter and parallel guide.

Simple Micro-Fine Depth Adjustment
7-Step Depth Stop
Two Adjustable Stops
Clear Sub-Base & Precision Centering Design
Connectable with Guiderail Adapter
Depth Scales in Inches & Metric
More Info
 
Fits GKF 600 and GKF 18V-8 18v cordless Router