Ball marker set: Two beautiful flower markers. Size: 22mm diameter, approximately 3mm thick. Suitable for the size recommended by the association for ground golf. This type can be attached to a magnet for portability. Magnets are not built-in, so please use a base with a magnet, such as a clip. These are handmade by me using resin. The inside is steel, and the back is finished with stainless steel foil. They reflect light and shine in rainbow colors, making them easy to find and suitable for various types of golf. How about a small gift for family and friends who enjoy golf? I also have 25mm markers and handmade markers with different designs for sale, so please take a look. These are handmade by an amateur, so there may be some imperfections, but please understand.