Thank you for viewing. This is an unused item that has been stored for a long time. Due to storage, I'm listing it as having some minor scratches and dirt. I'm not sure if it's resin or metal. 3.5 cm long, 7 mm high. There may be some slight errors due to amateur measurements. I think you can place two brushes on it. There's a nail sticking out at the bottom, so it should be stable if you stick it in. I am selling a portion of a large quantity that was wrapped in newspaper. Please be aware that this is a long-term storage item and understand before purchasing.