Bike Rear Derailleur Hanger Extension Extender Gear Tail Hook Cassette Adapter
HIGH-GRADE MATERIAL: Rear Derailleur Extension is made of quality aluminum alloy with CNC machining, sturdy and firm, and -resistant.WELL CMPATIBLE: Rear Derailleur Extension is used to lengthen the rear dial chain, and apply to flywheel 0T/ 42T/ 46T/ 50T highway flywheel.fantastic PERFORMANCE: Using this helpful Rear Derailleur Extension, making the flywheel speed change more smoothly.GOOD ITEM: Easy to install and remove, really a great accessory for cycling enthusiasts.Specifications:Material: Aluminum AlloyOptional Color: Red, Black, BlueTotal Length: Approx. 62 mm/ 2.44 inchHeight: Approx. 23.5 mm/ 0.93 inchThickness: Approx. 11.6 mm/ 0.46 inchHole Distance: Approx. 40 mm/ 1.57 inchWeight: Approx. 31 g (Included screw)Packing List:1 * Rear Derailleur Hanger1 * Screw