Handmade Materials: Leatherette Set of 4 coasters Coasters measure between 3 7/8" x 3 7/8" and 4" x 4" These personalized coasters are perfect for a unique, custom gift for the HAM Radio enthusiast. Each set is designed and individually handmade in our studio. The image is engraved into black to silver leatherette material. Each personalized coaster set includes four custom leatherette engraved coasters. Each coaster is approximately 4" square and is about 1/4" thick. Laser Engraved by us in house. All items are made at time of order. All of our products are designed, engraved, finished, and shipped personally by my husband and myself! After inspecting your coasters upon package delivery, if you have any questions, concerns, or issues with your order, please reach out immediately, and a member from our team will be happy to assist you.