This Shimano chainring is perfect for cyclists looking for reliable and durable components. It is made of high-quality material and has a silver color. With a tooth count of 39 teeth and a bolt circle diameter of 130 mm, this chainring is suitable for Shimano Tiagra groupset with group code 4600. It is designed for 10-speed bicycles and has 5 arms. This chainring is ideal for road bicycles and provides a smooth and efficient shifting experience. Product specifications - Brand: Shimano - Shimano groupset: Tiagra - Shimano groupset code: 4600 - Shimano model code: FC4600 - Model year: 2011 - Number of arms: 5-arm - Color: Silver - Tooth count: 39 - Bolt circle diameter: 130 mm - Type: FC-R550 - Number of holes: 5 - Number of teeth: 39 - Chainring type: "Race: Double"