OverviewFeatures: Included in the package are the nonslip pads that can be easily fixed at the base of the circuit board table coasters for drinks. They ensure that the coaster stays firm on a variety of surfaces, providing additional stability to your cups and preventing spills. These PCB board coffee coasters offer a balance of style and functionality, and will continue to impress while providing practical service to you and your guests. These PCB circuit coasters are convenient and cool choices for homes, bars, kitchens, coffee shops, offices and more. They are durable and easy to clean, allowing you to enjoy the practicality with ease. Specifications: Material: PCB material Color: as pictures show Size: about 3.54 x 3.54 inches/ 9 x 9 cm (L x W), 0.08 inches/ 0.2 cm in thickness Package includes: 8 x Circuit board square drink coasters 32 x Nonslip pads Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.