Cane Creek Interlok Headset Spacer Interlok spacers eliminate the irritating squeaks that can occur when traditional headset spacers move in relation to one another. Meshing features on the spacers and top cover allow them to act as one unit, making the steering assembly more rigid while still allowing easy height adjustment. | Cane Creek | 110 Interlok Headset Spacer | Black | 10Mm