Mate Series Stainless Steel Rod & Cup Holder Backing Plate f/Round Rod/Cup Only f/3-3/4in Holes. Screws are included.For use with Round Top ABS Plastic Only in a 3-3/4 existing hole. Specifications for Mate Series Stainless Steel Rod & Cup Holder Backing Plate f/Round Rod/Cup: Manufacturer: Mate Series Fabric/Material: Stainless Steel Size: One Size Package Contents: Mate Series Stainless Steel Rod & Cup Holder Backing Plate f/Round Rod/Cup Mate Series C1334314: Stainless Steel Rod & Cup Holder Backing Plate f/Round Rod/Cup Only f/3-3/4in Holes