There are 6 insert packages available. They are as follows: Blank inserts, Rock inserts (singles), Rock inserts (multi), Stone Wall package 15mm, Stone Wall package 28mm, Natural Rock Wall Package. These are all extras. If you want them add them on to your kickstarter. I figured that not everyone would want these so I put them on separate for those who would. The Stone Wall package 15mm, Stone Wall package 28mm and Natural Rock Wall Packages are designed to be used with The hedge package. You can use them with the other packages if you wish, but I designed them for the hedge package. The Blank inserts, Rock inserts (singles), and Rock inserts (multi) are designed to be used with any of the packages. I will be doing a video on this so please stay tuned to that.