15T

 CNC-machined from long-wearing 7075-T6 aluminum alloy Designed to fit Shimano-compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette...

 CNC-machined from long-wearing 7075-T6 aluminum alloy Designed to fit Shimano-compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette body Alloy cogs are anodized black with laser-etched graphics 15T x 3/32` 15T Black 13gUPC/EAN/GTIN: 639266092384

 CNC-machined chromoly construction Designed to fit Shimano-compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette body Electro...

 CNC-machined chromoly construction Designed to fit Shimano-compatible cassette hubs and have a 5mm wide inner base, giving a more solid interface with the cassette body Electro plated black with laser-etched logos 15T x 3/32` 15T Black 13gUPC/EAN/GTIN: 639266092445

 Splined, hardened chromoly construction Optimized for strength and durability Designed for Shimano/Sram style cassette bodies ZERO-FLEX taper base design Strongest single...

 Splined, hardened chromoly construction Optimized for strength and durability Designed for Shimano/Sram style cassette bodies ZERO-FLEX taper base design Strongest single speed cog on the market 15T x 3/32` SilverUPC/EAN/GTIN: 072774188390

Threaded, hardened chromoly designUltra strongCoated to withstand rusting1.37` x 24 tpi15T x 1/8`BlackUPC/EAN/GTIN: 888571075838

Threaded, hardened chromoly designUltra strongCoated to withstand rusting1.37` x 24 tpi15T x 1/8`BlackUPC/EAN/GTIN: 888571075838

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15T x 1/8` SilverUPC/EAN/GTIN: 072774187331 ...

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15T x 1/8` SilverUPC/EAN/GTIN: 072774187331

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15T x 3/32` SilverUPC/EAN/GTIN: 072774187348 ...

 Threaded, hardened chromoly design Ultra strong Coated to withstand rusting 1.37` x 24 tpi 15T x 3/32` SilverUPC/EAN/GTIN: 072774187348