Replacement SRM Composite Arms with Alloy Inserts.
These fit any of the 30mm Origin Systems, or 24mm - with the purchase of a reducer.

SPECIFICATIONS
Lengths: 150mm, 160mm, 165mm, 167.5mm, 170mm, 172.5mm, 175mm
Material: Carbon Fibre Arm, Alloy Inserts
Use: Road and Triathlon