The file 'Quadlock Extension Arm 50mm 3D Printer Model' is (f3d,stl) file type, size is 1.3MB.
It may not work for the moment, so I've put the fusion 360 file so that you can modify it
quadlock_extension_arm_50mm_v4.f3d | 1.2MB | |
quadlock_extension_arm_50mm_v4.stl | 802.1KB |