Durable one-piece molded plastic rod holder mounts very flush to avoid catching on toes, etc. 90 degree mount holds rods straight up from a horizontal surface, mounts in a 2" hole. Inside diameter is 1-5/8" at the top and tapers down to 1-1/2" at the bottom and has a molded in rod index at the bottom to hold rods securely. Flat top flange measures 4" long and 2-3/8" wide. Mounts with 2 counter sink screws (not included), 2-3/4" apart on center. Overall length is 8" from the underside of the flange.