Knot Cufflinks Tuxedo Stud Set. A complete, formal stud set featuring Knot Cufflinks and matching Knot Studs. An accessory design staple, the classic knot design is crafted in a plated, base-metal setting. Cufflinks feature an easy to use bullet backing and the tuxedo studs are constructed with a trigger mechanized backing. Cufflinks by Ox and Bull Trading Co. Stud set includes 2 cufflinks and 4 studs. Gold studs are gold plated silver. Silver studs are rhodium plated silver. Dimensions: Approximately 5/8" x 5/8"