Prime Line N 6755 Bi-Fold Door Pull Knobs, 1-3/4'' O.D, Diecast Brass Plated 2PK These bi-fold door knobs are constructed of diecast and come in a brass plated finish. They feature knobs with a large 1-3/4 inch diameter pull for easy gripping, and a 3/4 inch outside diameter base. These knobs have a 9/16 inch projection, and they can be installed on hollow core and solid doors. This pack of 5 bi-fold door knobs comes complete with 5 fasteners, they are simple to install and used by a variety of wardrobe door manufacturers. Used to replace damaged or missing knobs on bi-fold door panel systems 1-3/4 inch outside diameter, 9/16 inch projection, 3/4 inch diameter at base, fits on doors up to 1-3/8 inch thick Brass plated finish Diecast construction Includes installation fasteners