It is Engineering Set Square and Protractor Cufflinks. Every woman loves an intelligent man. Show off your brainpower with a pair of Engineering Set Square and Protractor cufflinks. The concept of engineering has existed ever since the beginning of man. Inventions such as the pulley, lever and wheel are consistent with the modern definition of engineering, as it exists today. If you are the kind of gentleman who likes to let his intelligence show, you’ll love these Engineering Set Square and Protractor cuff links. The attention to detail is amazing, as each cufflink is incredibly realistic. It is made from silver and rhodium-plated; the black enamel accent helps bring these cufflinks to life. Perfect gift for any engineer or mathematical whiz. Hand-polished to perfection and ready to wear. Presentation box included. The Cufflink size is: Approx: 1/2” x 1”.