Box One Single-Speed Chromoly Cogs are CNC-machined from long-wearing CNC-machined from chrome-molybdenum. It’s designed to fit Shimano compatible cassette hubs and has a 5mm wide inner base, giving a more solid interface with the cassette body.

Material: Chromoly Steel

Process: CNC-Machined

Finish: ED Black w/Laser-Etched Graphics

Size: 13T, 14T, 15T, 16T, 17T, 18T

Compatibility:
Driver: HG Freehub Body
Chain: 3/32 or

Weight
13T: 24 g/0.85 oz
14T: 29 g / 1 oz
15T: 35 g / 1.2 oz
16T: 38 g / 1.3 oz
17T: 43 g / 1.5 oz
18T: 51 gs / 1.8 oz