These don't look like fir trees (the Christmas tree sort); they look more like the pine cone producing sort. I used some of mine for 1/35 trees, so they were a bit small. I think they are best used for about 1/72 scale. However, depending on how you use them, they should be good for any scale. I recommend that you also buy Hob-e-Tac to stick them together. The supplied foliage seems to plentiful, and of course you can buy extra as needed. 24 in one pack means you can cover a lot of ground. Great value.