Sunrace RD-R37 6/7 speed silver/black rear derailleur 21.7x11.4x8.3 Soft-lined phone pocket is large

Soft-lined phone pocket is large enough to hold most modern phones and doubles as a sunglasses pocket

Rings 50/37Number of Chainrings DoubleDrivetrain Speeds 12Chainring BCD Direct Mount SRAM 8-BoltChainline/Hub Compatibility 135/142 Road Disc Hubs < 415 mm ChainstayChainline/Hub Compatibility 135/142 Road Disc Hubs > 415 mm ChainstayColor CarbonCrank Length (mm) 170Crank Intended Use RoadBB Included NoPedal Spindle 9/16"Spindle Interface Type SRAM DUBDefined Color Carbon

}Wera 8000 B Zyklop Speed Ratchet - 3/8" Drive

Performs well in all conditions

Sunrace RD-R37 6/7 speed silver/black rear derailleur 21.7x11.4x8.3 Soft-lined phone pocket is large6 7 speed road rear derailleur. Composite aluminum and steel construction. SHIMANO Equivalent RD A070 TECH SPECS 6 7sp 28 31 Short 2to1 SIL BLK 282g