JessEm 02001 Rout-R-Lift - 11 3/4-Inch x 14 3/4-Inch Top Plate Insert plate dimensions: 11-3/4 x 14-3/4 x 3/16 thick Insert plate is machined with a 3-5/8 dia. TAB-LOC&#8482; centerhole. Built in plate leveling system for a perfect fit flush to the tabletop. Includes a 1-1/2 insert ring with a wrench, starting pin and hex key wrench.