It is Classic Apex Square Cufflinks prove its hip to be square. Suitable for dad, groomsmen, and men of all ages, this gleaming geometric design will never go out of style. Back closure protects your investment. Approximately it measures as 5/8" x 5/8" in diameter. Rhodium plated base metal Swivel back closure. Add a touch of elegance to any formal outfit with these classically styled cufflinks.