Weight capacity is 2.5kg. It will be shipped via Yu-Packet Post Mini. To adjust the size, the screw knob (the screw on the left in photo 2) will be removed, so please attach it after arrival. Also, it will not be wrapped in bubble wrap. You can use it without any problems, but please understand that it is a used item before purchasing. I have another one of the same item. If you would like it, please comment. Two for 2699 yen.