This is a set of two silk screen printing frames, A3 inner size, with 80 mesh or 100 mesh. Please specify your preference of #80 or #100 in a message after purchase. This product is coated with a photosensitive emulsion that can be used with both water-based and oil-based inks. #80 is suitable for designs without many fine lines or patterns, and is ideal for printing on T-shirts, cotton bags, wood, etc. #100 is suitable for designs with some fine lines or patterns, and can also be used for printing on T-shirts and cotton bags, but is more suitable for printing on materials with relatively smooth surfaces. The photosensitive emulsion will be applied before shipping, and the screens will be fully dried before being sent. Silk screens can be exposed using sunlight, and you can easily print your own original logos, etc., with DIY methods, so please give it a try. Mesh count: #80 or #100 normal (coated with photosensitive emulsion for water-based and oil-based inks) Exposing film: 2 sheets included Outer dimensions: Approximately 550/450/18mm Inner dimensions: Approximately 480/380mm Other: Sunlight exposure instructions, screen film strengthener *The photosensitive emulsion hardens when exposed to ultraviolet light. Be careful not to expose it to light before exposure. If you are unsure about exposure, we also sell test screen meshes, so you may want to try those first before purchasing the main screen printing frames. If you have any problems with exposure or printing, please feel free to ask. #silkscreen #stencil #screenprinting #Tshirtprinting