This is a remix of my single frame mount of the E3D Revo Connect modular system. It's a four module inline nozzle holder bracket. It slips into the lower frame of the Prusa Mini/Mini+/MK3/MK3S/MK3S+ and be installed on the left or the right and slid forward or backward along the rail as you like.
Please check out the single and dual mount versions I made of this as well.
The author remixed this model.