The Xtra stem is CNC machined to perfection from 7075 T6 Aluminum. It is available for 1 1/8 inch steerer tubes and both 26.0 amd 31.8 handlebar diameters. It has a plus or minus 10 degree angle. It is very light weight at 145g (100mm). The Xtra stem will compliment any of the Modolo bars very well.