Features: • Single Speed adaptor kit for 8/9 speed cassette hubs. • Pair of CNC machined aluminium spacers that look much sweeter than a bunch of washers to space out a ‘Deep-tooth’ single sprocket. • CNC Cr-Mo cogs have wide 7mm base to avoid ripping into the cassette body. • Built-in offset optimises chainline. • Supplied with 12T 5/64” cog* and lockring. *Note: are suitable for narrow 5/64” (9 speed) chains.