Amazon.com: Shimano (640) ZEE 10 Spd Rear Derailleur Shadow+ for FR Direct Attachment
MTB - Umwerfer einstellen - YouTube
Amazon.com : Tongli 10 Speed/9 Speed Bike Chain - 116 Links - 1/2 x 11/128 Inch - Compatible with Shimano/KMC/Campagnolo/SRAM for Road & Mountain Bike : Sports & Outdoors