UPDATE: Added a snap op landing leg. Secures with a zip tie. Made for easy replacement after a crash. This remake is made for 10mm square tubes. It contains a motor mount and landing legs as seen on the pictures. The holes for the motor are 16mm and 19mm apart. It's perfect for my HP2212-1000kv motors. The actual clearance is 10,25mm. It is still a thight fit so you might need to use some sandpaper to make it fit. Make sure the landing legs fit snug enough so they will stay in place because there are no holes for bolts. There is a hole on the end of the motor mount so you can run the motor wires through the tube for a nice and tidy copter!I used 40% infill for both and it seems though enough so far!