Printed on my MPSMV2 originally used with the stock extruder parts and non-standard tube fitting. I had to clip the left edge about 1mm to fit next to the stock extruder base and utilized with two ziptie holes. After replacing the stock extruder parts with the WK9 extruder components (https://www.thingiverse.com/thing:2756509) and replacing the fitting with a standard bowden tube fitting, I had to clip back the support further and eliminate the left ziptie hole. I still like having this support with the modified extruder parts to keep the tube from flexing too much.
Hobbyking 1kg standard PLA (China) PLA