Shimano chainring 36 teeth 9 speed BCD 104, FC-M590/T4060/T4010 Black 4 arm is a high-quality chainring from the Shimano brand. With a tooth count of 36 teeth and a bolt circle diameter of 104 mm, this chainring is suitable for 9-speed bicycles. The chainring has a black color and is made of durable material. It is specifically designed for ATB bicycles with a triple crankset. Product specifications - Brand: Shimano - Shimano group: Deore - Shimano group code: M590 - Shimano model code: FCM590, FC-T4060, FC-T4010 - Model year: 2009 - Number of arms: 4-arm - Number of gears: 9 - Color: Silver - Tooth count: 36 - Bolt circle diameter: 104 mm - Chainring type: "ATB: Triple"