FSA Premium Headset Half Orbit C No 8 1.1/8 42.0mm Lower GreyFSA Premium Headset Half Orbit C No 8 1.1/8 42.0mm Lower Grey. Compatible with OD: 46mm ID: 42.0mm head tube and 1.1/8" tapered fork. Lower: 45°/ 45° ACB (Grey seal).
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