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BICYCLE GEAR PART TOURNEYAlloy Construction Leads to Lower Weight Without Compromising Strength and DurabilityBicycle Gear DerailleurIn-Box Contents: 1 Piece DerailleurGreat Transmission Function6-Speed, 7-Speed and 8-Speed Compatible Alloy Construction Leads to Lower Weight Without Compromising Strength and Durability Great Transmission Function. cycle disc brake, 7 speed derailleur, derailleur, cycle disc brake pack, sports item, disc brake.