Measures 91/4” x 113/4” (235mm x 298mm) 3/8” thick (9mm) phenolic insert plate Comes with predrilled holes and mounting hardware Designed to fit the Porter Cable 690 and 890 Series, along with the Bosch 1617 Level-Loc Reducing Rings Available in 3 versions: undrilled, predrilled for Triton, and predrilled for Porter-Cable and Bosch Solid, Flat, and Perfectly Level Mounting Surface This rugged 3/8” thick (9mm) phenolic insert plate is designed to provide a solid, flat, and perfectly level mounting surface for your Porter-Cable and Bosch router. Measuring 91/4” x 113/4” (235mm x 298mm), it will accept almost any Porter-Cable and Bosch router (even large, heavy models) with ease. Predrilled Holes for Porter-Cable 690 & 890 Series This plate comes with predrilled holes and mounting hardware to fit the Porter-Cable 690 and 890 Series.