apparently the manufacturer has redesigned the frame, and holes are smaller in newer model.
this will only fit in the older model A8.
button guide for Anet 3D "Anet A8" model Prusa i3 3D printer aka "Omni" aka "m-505".
Acrylic framed printers with 5 button next to LCD screen.
should reduce play, install from back of the acrylic frame.
may be the same printer as "alunar", "senhai", "hesine", "kaleep", "kakeep" and others?