Allen key handle holder - 8 pcs version

I modified Toxco's ( https://www.printables.com/@ImTocxo_953207 ) holder to have 8 spaces - the same as the number of handle sizes in OlleMark's ( https://www.printables.com/@OlleMark ) models. I also changed the diameter of the second row holes from d5 to d10, to allow a 8mm allen key to be stored. The height of the model is scaled to 90 mm, since my 8mm allen key needed extra space.