Shimano's 3 x 9 Crankset is designed to work with the highly efficient 24mm outboard bearing bottom technology for miles upon miles of trouble-free pedaling. The wide-range gearing ensures you can always find the right speed, climb steep hills, and pedal through the descents. Features Designed for 3x9 speed MTB drivetrains Hyperdrive technology it provides smooth and precise shifting Includes chain guard Bottom brackets parts not included Specifications Groupset Series- Shimano Alivio Chain Line- 50mm Chainring Mount- Steel Drivetrain Speed Compatibility- 9 Speed Chainring Material- Steel Crankarm Material- Aluminum Chain Guard- Yes Recomended Bottom Bracket- BB-MT501, BB-MT500PA Additional Info Country of Origin: China Imported By: Shimano South Asia Pvt Ltd. , 19 , (Ground Floor) Kumara Krupa Road , Bangalore – 560 001 , Karnataka , India. Net Quantity: 1N Customer Care Address: 291, 10 Main, 5 Block, Jayanagar, Bangalore - 560041. Ph: (080)47183232, Email: support@bumsonthesaddle.com Commodity: Cranksets