These are some textures I've made for my own needs, but unfortunatly I made an error rendering them and they are not tiling seamlessly. but these are still good textures.

There are 4 variants of the texture, each with a normal and height map, they are 512x512

The heightmap is in the green channel of the files with "_shga.png" at the end, you may ignore the other data in these textures.