The main section of the bar is pretty wide at 67cm, but it can be cut down easily. This provides good control on rough surfaces and around town. The bullhorn section offers a streamlined position for smoother roads and headwinds. The center portion replicates the top of a drop bar, and placing your hands at the junctions is not unlike riding on the hoods.
The main bar is 22.2mm so MTB grips, levers, and shifters fit. The "horns" are 23.8mm, so road levers - including inverse levers - fit, as do bar-end shifters. Clamp area is 31.8
Crazy Bars are made from 6061 aluminum and are heat treated. Weight is pretty reasonable at around 450gm. Note that these are not intended for mountain bike use.