Real circuit boards and resin are used to create these colourful, upcycled cufflinks. The circuit boards are cut into circles, the edges sanded by hand and then set into the silver plated cufflink fitting. Resin is then poured on top of the circuit board creating a clear, high quality, glass dome effect. Each pair of cufflinks is presented in a cardboard giftbox to make the perfect geeky upcycled gift. Definitely a great present for any techie enthusiast! Size: 18mm in diameter Available to buy in many circuit board colours, green, blue, red, purple, orange, yellow or black, see other listings for other colours. Each pair of cufflinks is completely unique. You wont receive the exact pair in the photo but they will be very similar.