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• TANKE MTB Bicycle Cassette Freewheel Single Speed Mountain Bike Flywheel Sprocket Conversion Cycling Accessories Parts Feature: The product is produced via 7075 aluminum alloy, which is ultra-light and corrosion resistant, keeping power and reducing weight on the identical time Specification: Name: TANKE mountain motorcycle bicycle flywheel Material: 7075 aluminum alloy Color:purple,blue,red,lack Specification: 18T Net weight: about 68g Note: This flywheel is compatible with 7-12 speed cassette flywheel tower base, the chain please desire 7-12 chain to install Please allow 1-2cm measuring deviation thanks to handbook size

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