Fsa Headset Half Lower Back Packs and when the nut is

and when the nut is sufficiently tightened

Very robust design with high accuracy as per DIN EN ISO 6789-1: 2017-07

Diamond coating for a secure fit in the screw

Reduced rider fatigue

Fsa Headset Half Lower Back Packs and when the nut is56mm ZS Lower Assembly Orbit Z #57 HEADSET TYPE: Threadless Zero Stack STEERER TUBE: Tapered 1. 5" MATERIAL: Alloy LOWER CUP: 56mm Flush Cup LOWER BEARING: 36 x 45 1. 5" ACB Sealed Bearing 51. 8mm OD 55mm ZS Lower Assembly SX Pro Scott Merida + Others HEADSET TYPE: Threadless Zero Stack STEERER TUBE: Tapered 1. 5" MATERIAL: Alloy LOWER CUP: 55mm Flush Cup LOWER BEARING: 36 x 45 1. 5" ACB Sealed Bearing 51. 8mm OD 49mm External HS Lower DX Pro 1. 5