Some of the coolest and most unique cufflinks you'll ever find. Approximately 5/8" diameter, they are an actual working Wingnut and Bolt in shiny sterling silver with a bullet back closure. They are a perfect addition to your collection and will go well with a grey outfit. They have a unique back closure and would definitely put a smile on a friend’s face. For a timeless and immaculate shine, each Nut and Bolt cuff link was delicately hand-polished. The quality is incredible. Perfect for any cufflink collector, handyman, plumber or any man who loves his tools. Presentation box included. Cufflink size: 5/8” diameter.