PARIKHS LuxLock TM USA Patented (Patent # US8365369) system sets a new standard for quality and security. PARIKHS LuxLock TM is designed to provide the most secure grip available in a 10k White / Yellow / Rose gold clutch. It's surgical stainless steel mechanism guarantees strength. The notches on the post lock into the bullet clutch with an audible 'click,' letting the customer know the earring is securely in place. PARIKHS LuxLock TM is the only luxury earring clutch available today that combines strength, style and effortless simplicity.