This is a monitor block/bushing quick attachment for WALI monitor arm

thingiverse

This was created to fix a problem with the Wali monitor arms: A lot of slack/play when mounted. The stock plastic piece wiggles terribly. This new piece is an exact fit into the mounting bracket, and installs on the VESA mounting plate using the original screws. It also has a larger contact area with the plate, and sits in a lower profile- which means the screws connect through the mounting plate better, and the plate doesn't have a large gap to the arm. I have been using this with a 49" monitor and no more wiggle or vibrating from touching the desk or typing. No supports are needed. This should be printed at 100% infill with a very strong material-- Your entire monitor is bolted to this piece, which is sitting in the arm.