Nebublu 1x10 Speed MTB Derailleurs Shifter Groupset Bike Crankset 11-50T Cassette Flywheel 10 Speed Chain - Smooth and Precise Shifting for MTB Mountain Bike

kit includes a 10-speed cassette flywheel, a 104BCD 170mm crank set, a 10-speed chain, a shifter, a rear derailleur, a center shaft and a hanger extender. It can Top-notch improve speed performance of mountain bikes, combining aerodynamics to reduce bike weight and increase riding speed. Made of Grade steel and aluminum alloy, it is sturdy and has nice durability, high strength, Durable and Durable not easy to rust. It can be used to modify your bike shifting system, perfect as a gift for family, friends, colleagues, cycling enthusiasts, etc. Easy to install and use, with nice compatibility, smooth running, make riding easier.