Onyx insets capture the look of luxe for your formal wear. Silver and Onyx Stud Set is a simple, yet refined way to lend sophistication and class to your tux. Stud set features 2 cufflinks and 4 studs for a suitable way to dress up. Stud set by Ox & Bull Trading Co. 6 Toggle closure Warranty available Imported Product Specifications 3/4" Material & Care Metal, Rhodium-plated base metal Clean with a soft cloth.