St Martin wanted to make a light and reliable sprocket.
Solution: remove half of the teeth. Chain tension and chain rotation are not affected by the lack of these teeth.
- Works with any crank that accepts micro drive sprockets
- 22mm spindle hole size, 19mm adapter included
- Made of 7075-T6 Aluminum
- 4mm thick
- Works with both 3/32" and 1/8" wide chains
- Weight: 16T - 15g, 20T - 25g, 24T - 32g