Stem Steel CP Humpert Ergotec CV 101 Original NOS from Humpert Germany NOS= New Old Stock Oldschool 70-90s CP steel Handlebar mount with single bolt: 25,4 mm (~1 inch) 25,4 mm (~1 inch) shaft 150 mm (~5,90 inches) shaft height 40 mm (~1,57 inches) nosing with 30° angle Using a single bolt mount won’t recommend handle bars with big hights.