Four Sizes:8x12 inch(20x30 cm) ,12x16 inch(30x40 cm) , 12x17 inch(30x43 cm) and 12x18 inch(30x45.5 cm). Since it is made of Aluminum /metal, it is durable, environmentally friendly and easy to clean. Each knowledge metal sign has a small hole at the corner, so it can be hung on the wall, or the goods can be upright on the wall with glue. Gift Idea:perfect present for family members, friends and anyone you love.Suitable for bars, shops, club, garages, wall decor, coffee shops, residences, the toilet, various independent places or home decor. Some paintings seem to have a rusty effect visually. This is a special printing effect, not really rusty, Due to the influence of light, the color may be slightly different, subject to the actual product. High-Quality After-Sales Service: Please trust our quality! This will be a fun, retro and stylish metal decoration. If you like this metal signs, please click the shopping cart now. Believe me, you will be deeply attracted by it.