Specification Brand : CHMEFLY BulletPoint1 : Tourney RD-TY500 rear derailleur is compatible with 6 and 7 speed SIS INDEX variable transmission systems. BulletPoint2 : Aluminum alloy body, excellent shifting performance, stable and rapid speed change ensure safe and stable riding. BulletPoint3 : Smooth guide wheel do not wear the chain, long service life and low noise. BulletPoint4 : Long cage tourney rear derailleur, this rear derailleur is eye-mounted (direct mount), not hanger mount. BulletPoint5 : The difference between the maximum and minimum sprocket teeth is 20T. The total value of the teeth change range is 43T. Smaller teeth speed is compatible with 11/14T, larger teeth speed is compatible with 28/34T. Color : Black ExternallyAssignedProductIdentifier1 : 603765416262 ExternallyAssignedProductIdentifier2 : 0603765416262 ExternallyAssignedProductIdentifier3 : 00689228222427 ExternallyAssignedProductIdentifier4 : 04524667332947 Hazmat : False ImportDesignation : Imported IncludedComponents : rear derailleur ItemDisplayDimensions_Height : 2.8 inches ItemDisplayDimensions_Length : 5.8 inches ItemDisplayDimensions_Width : 4.9 inches ItemDisplayWeight : 0.55 pounds ItemName : CHMEFLY Rear Derailleur RD-TY500 6/7 Speed Tourney Bike Derailleur for Mountain Road Bicycle Direct Mount ItemPackageDimensions_Height : 13.6906 centimeters ItemPackageDimensions_Length : 8.001 centimeters ItemPackageDimensions_Width : 13.6906 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : rear-bike-derailleurs ItemTypeName : Bicycle front derailleur Manufacturer : beijingmengenjianzuzhuangshigongchengyouxiangongsi Material : Aluminum ModelName : RD-TY500 ModelNumber : EFDM310X6 MountingType : Clamp-On Mount NumberOfBoxes : 1 NumberOfItems : 1 NumberOfTeeth : 24 PartNumber : RD-TY500 ProductDescription : Specification: Pulley cage: Long cage (SGS) Compatible with: 6/7 Speed Mount type: Direct mount Low sprocket_Max: 34T Low sprocket_Min: 28T High sprocket_Max:14T High sprocket_Min: 11T The difference between the max and min sprocket teeth: 20T Pulley_Teeth: 13/13T Total capacity: 43T