IRD Headset RollerDrive Silver threaded

– Made by Tange-Seiki in Japan

– High polished zinc-plated aluminum

– Caged ball bearings on top

– Needle bearing on the bottom assembly

– Headsets with needle (roller) bearings can assist bikes with fork shimmy.

– ISO standard, crown race 26.4

– Stack height: 35.9mm

– Weight 110g