ZTTO 946H 9 Speed 11T-46T Bike Cassette Flywheel MTB Hollow Bicycle Steel Flywheel 84703W • Battery: 1 x CR2032

• Battery: 1 x CR2032 210mAh button cell (included)

• GoPro Hero 12 Black

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• Ecovacs Deebot X2S

• Other items Not included

ZTTO 946H 9 Speed 11T-46T Bike Cassette Flywheel MTB Hollow Bicycle Steel Flywheel 84703W • Battery: 1 x CR2032Features & Specifications This cassette is a cassette sprocket for 9 speed shift mountain bike It is made of high tensile chromium molybdenum steel, and made by the technology of quench temper hardening, so it has higher strength, durability and has extreme resistance to abrasion. The strong antioxidation makes it hard to rust to have a long service life Because of the unique design of the gear sprocket exclusively for mountain bike, you can control