Thomson 50 mm 28.6 31.8 mm Bicycle Stems
About Thomson - Thomson is leading with innovative design for two primary markets - aerospace and cycling.
Stem length is measured from the center of one clamp to the center of the other clamp. This measurement is sometimes known as the reach or extension.
S.H.I.S clamp diameter is the steerer tube diameter.
Bar clamp diameter is the diamater of the handlebar.