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Bicycle Rear Derailleur Hanger:Made of highQuality Aluminum Alloy and CNC processed. It is Durable and Corrosion Resistant.It is Used to Lengthen the Rear Chain,Make the Flywheel Speed Change More Smoothly，Professionally Used to Modify 40-50T Large Flywheel; Bike Link Plier with Hook :Easy to Dismantle the Chain.

Bicycle Rear Derailleur Hanger:Made of highQuality Aluminum Alloy and CNC processed. It is Durable and Corrosion Resistant.It is Used to Lengthen the Rear Chain,Make the Flywheel Speed Change More Smoothly，Professionally Used to Modify 40-50T Large Flywheel; Bike Link Plier with Hook :Easy to Dismantle the Chain.

Bicycle Rear Derailleur Hanger:Made of highQuality Aluminum Alloy and CNC processed. It is Durable and Corrosion Resistant.It is Used to Lengthen the Rear Chain,Make the Flywheel Speed Change More Smoothly，Professionally Used to Modify 40-50T Large Flywheel; Bike Link Plier with Hook :Easy to Dismantle the Chain.