ITM "The Stem" 110mm Road StemITM "The Stem" is literally one of the lightest Italian stems ever made. Constructed entirely from Magnesium with special surface treatment processes (TAST), this ultra-light high strength stem gives you the reliability of steel or alloy and the weight of carbon. A beautiful addition to any classic European bike, this ITM stem is entirely made in Italy, even down to the titanium bolts. The stearer tube is 1 1/8” and the handlebar width is 25.4/26.0.