Silver Round Cufflinks Plain. These 925 Sterling Silver Round Cufflinks are offered with T-bar fittings. The round Cufflinks are manufactured in the UK by our silversmiths, and are fully hallmarked. Size approx: 2cm in width x 1.5cm in height. The plain Round cufflinks can be engraved with initials. All cufflinks are presented in a smart Cufflink box. Handmade by our silversmith.