*PLEASE MEASURE YOUR TABLE PRIOR TO ORDERING* . These rings are 3" OD and fit the 3" diameter "recess" in the router table. The through hole in the table is 2 7/8". If you don't understand these dimensions, please refer to the 6th photo. Please expect these rings to be 3" diameter when they arrive. If you need rings larger than 3" these will be too small and if you need rings smaller than 3" these will be too big.