Holder for M10 rodbar (Prusa i3)

In the past I used this item (designed by michielh) in my first 3D printer, a prusa 2 with m8 rodbars.

In my second printer, a prusa 3, I've need to hold the Arduino&Ramps. Also I've need a toolholder. And I want all in the front of the unit, near the LCD. So, I've decided to scale up the ramps holder to fit it in a M10 rodbar. I use repetier and increase scale in a 10%. In my test the new holder dont need screws or bolts to hold tighly in m10 rodbar.

In the pictures you could see the fin