Microshift R10 Rear Derailleur 10 Speed Long Cage Giant Those tires marked e50 are

Those tires marked e50 are also certified for S-Pedelecs

designed specifically for SRAM XDR freehubs

7g (Rear Regular Mount w/o pads)

The new architecture

Microshift R10 Rear Derailleur 10 Speed Long Cage Giant Those tires marked e50 areR10 rear derailleurs feature forged and CNC machined construction, pairing durability with finish quality. Compatibility with Shimano road products means you can mix and match to your hearts content. Specifications Group: R Series, R10Speed: 10 SpeedCage Length: Long CageMax Cog: 25 28TCapacity: 39TClutch: NoCage Material: SteelOuter Link Material: AluminumCompatibility: Shimano Road Mfr Claimed Weight TBC