Tr??ng ??i h?c Khoa h?c Xã h?i và Nhân v?n tr?c thu?c ??i h?c Qu?c gia TP.HCM I purchased this to carry my Korg Kronos that's a pretty heavy keyboard that I definitely gonna use the wheels. Having said that, at The very first time I place it into the case and drag it away,