The Saint dual chainring crank is Shimano's first purpose built wide range mountain bike double featuring 36 x 22 gearing. Hollowtech II Design: Increased strength by over 200%. n Wide Range Double Gearing: The dual chainring crank is a purpose built 36 x 22 wide range double crankset. Compatible with the Saint/SLX Double front derailleur. Longer BB Adapter Cups: New longer bottom bracket cups improve durability & compatibility with aftermarket chain guides. Durable Bash guard: The resin honeycomb design is super durable. Front Derailleur Compatibility: Either FD-M665 or FD-M667.