3T Arx Pro Stems are made of 3D forged and CNC machined 2010 aluminum with stainless steel bolts.Optimized clamp design3D forged and CNC machinedOutstanding valueItem SpecificationsColorBlackIntended UseRoadBar Clamp Diameter31.8mmStem Angle107,73degStem Length120mmSteerer Tube1-1/8" ThreadlessDefined ColorBlackS.H.I.S. Clamp Diameter28.6