Porter Cable 42187 Features :

• It is constructed of clear plastic, providing better visibility.
• It installs easily, using existing screws from router base.
• It will fit Porter-Cable routers, model no.100, 690, 9690, 691, and 693.
• Extra large center hole
• Allows use of larger bits
• Installs easily using existing screws in router base
• Installs easily

Porter Cable 42187 Specifications :

• Diameter:7 inch
  
• Center hole: 2-1/2"

Porter Cable 42187 Includes

• One sub base.