Size approx:0.67inches/1.7cm Suitable for buttons up to 0.51 inches / 1.3cm Button covers style cufflinks that can be worn on any shirt as a beautiful and stylish accessory, No special double cuffed French shirt requiredButton covers style cufflinks perfect for tuxedos and formal events; as an alternative to traditional cufflinks in a professional environment; Or as a modern accessory for trendy casual shirtsSimple to use Our button covers fit almost any standard shirt – just open the base – slide it under the button – and close.It is made of high-quality eco-friendly copper, which is beautiful and durable, and has stood the test of time. High polishing and strict plating process, long-lasting color retention. Check one by one, safe and healthy to wear, more convenient and durable