A P90 key tag. The hole in the stock is 5mm in diameter at original size. if resizing, especially to a smaller size, it is highly recommended to enlarge this hole to be a constant size of 5mm. When downloading, you will notice there are two files. The one labelled 'P90 Key tag' has the hole in the stock. If you want to use it as a model, print the file 'P90 Model'