The odyssey elementary v3 stem one 8mm hex key does all the tightening for simultaneous handlebar and steerer tube clamping thanks to its award winning and patented design the elementary is one of the lightest and strongest stems available groove wedges and thru window simplify assembly and alignment odyssey elementary v3 stem features 50mm reach 19mm rise fits 1 18rdquo forks forged 2014 t6 aluminum