Amazon.com : Shimano 105 RD-5701-SS Rear Derailleur - 10 Speed, Short Cage, Black : Rear Bike Derailleurs : Sports & Outdoors
Amazon.com : Shimano Rear DERAILLEUR, RD-M6000, DEORE, GS 10-Speed, Shadow Plus Design, Direct Attachment(Direct Mount Compatible) : Sports & Outdoors
Amazon.com : Rear Derailleur, Huazu Bike Parts Gear Shifter for Shimano RD-TZ31-A with Direct Mount/Hanger Mount for 6/7 Speed Mountain Bicycles : Sports & Outdoors
Amazon.com : Shimano RDM310DL Altus GS 7/8-speed Rear Der Black,Long Cage : Rear Bike Derailleurs : Sports & Outdoors