This is a quick and easy part i kept finding bits of white plastic on the right side of the printer and would get a tapping/nocking noise when printing large prints. I found when the head moves right the tube flicks off the lip the glass sits on and causes a noise also there is the thred of a screw poking through that is wearing the tube and creating the snow. This part helps with that by removing the lip and covering the screw the part holds in place by clicking onto the screw but a bit of double sided tape may be needed.