The file 'Anet A8 Tool Holder 3D Printer Model' is (stl) file type, size is 627.6KB.
No drilling required, just use existing screws on the other side of the main board. Not sure if the screws will need to be slightly longer if you are using old ones, as I happen to have bought longer ones to fit the printer board cover that I remixed.
If you want the matching tool holder for the other side (wrench and clipper) it's here:
http://www.thingiverse.com/thing:2086689
my_tool_holder.stl | 5.9MB |