Amazon.com : Inkesky RD-TZ31-GS 6/7 Speed Rear Derailleur with Direct Mount, Medium Cage, for Mountain Bike : Sports & Outdoors
Shimano Tourney RD-A070 Rear Derailleur - 7 Speed, Short Cage, Black, Shimano Rear Direct Mount - SoCal Bike - Oceanside, Carlsbad and north San Diego county's favorite bike shop, Bicycle and ebike