Lixada Portable MTB Mountain Bike Speed Bicycle Bike Rear Derailleur Converter Cycling Tail Hook Extender

description":"Adding this product in the bicycle dial hook the converter, you can easily solve the troubles you encounter.   Features: The derailleur hanger extension is a unique device that offsets the position of your road derailleur to make it possible to run a wide-range mountain bike style cassette. Aluminum alloy material, CNC workmanship, solid and firm, enduring and long time to use. This product is used for rear derailleur extension, apply mountain freewheel 10-11, 40T, 42T, 46T/ 50T / 32T / 36T Road flywheel. Expand the flywheel speed change more smoothly. Adding this product in the bicycle dial hook the converter, you can easily solve the troubles you encounter. It is great for riders with double chaining bikes that want lower gearing for those ultra steep climbs. Great accessory for cycling enthusiasts.   Specification: Material: Aluminum Alloy Color: Red / Black(Optional) Size: approx. 4.5 * 1cm/1.8 * 0.3in Hole Diameter: approx. 1cm / 0.4in Screw Diameter: approx. 0.5cm / 0.1in Weight: 11.2g / 4.4oz Package Weight: 12g / 4.7oz   Package List: 1 * Piece Cycling Tail Hook Extender 1 * Piece Screw   Tip: The bike rear derailleur hanger has different size, doesn't match perfectly. You need to polish the bottom of the tail hook.