Wolftooth - Corona SRAM T-TYPE 8-VITI DIRECT MOUNT 1X 12V Variant:42 teeth, black, DROP-STOP B (compatible with Eagle and FlatTop, not compatible with SH12 and KMC12) The Topeak Bar'n extensions are

The Topeak Bar'n extensions are equipped with rearview mirrors to improve cyclist safety

Nylon straps for extra support

CERAMIC BEARINGS

Sensor that reads the wheel rotation speed with the help of a magnet positioned on the spoke

Wolftooth - Corona SRAM T-TYPE 8-VITI DIRECT MOUNT 1X 12V Variant:42 teeth, black, DROP-STOP B (compatible with Eagle and FlatTop, not compatible with SH12 and KMC12) The Topeak Bar'n extensions areSpeeds: 12 v Bolt circle diameter (BCD): Direct Mount Sram 8 bolt boost 3 mm offset Shape: round Anti drop technology: Drop Stop B Compatible with Sram Direct Mount 8 bolt cranksets Weight: 65g Compatible with all 9, 10, and 11 speed chains, with 12 speed Sram Eagle, T type and FlatTop, Connex, Wippermann, and Campagnolo chains. Not compatible with chains: Shimano HG+ 12v, KMC 12v, and Campagnolo 13v Use: MTB Number of front chainrings: 1x Speeds: 12v