easy to set up. was initially worried that my bikes were too heavy (i have two adult-sized "comfort" bikes made by raleigh). the top portion of the bar is smaller in diameter than the bottom portion, and the instructions state that the top is capable of holding a maximum of 30 lbs. (45 lbs for the bottom bar). both bikes weighed in at around 33 lbs., but they have stayed put for the past three weeks and counting.