The Stanley SXWTD-FT585 transport trolley is not specifically designed for transport over stairs. Although it is robust and versatile, with a load capacity of up to 137 kg as a platform trolley and 70 kg as a sack truck, it lacks special features such as wheels or mechanisms to facilitate safe transport over stairs.

For transporting an 80 kg pot over 4 flights of stairs, it would be advisable to use a transport device specially designed for stairs to ensure safety and stability during transport. The Stanley SXWTD-FT585 is better suited for flat surfaces and smooth surfaces.