Shimano RD-RX812 GRX 11-speed rear derailleur, Shadow+ single

From Shimano:

• Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
• Low profile Shadow Plus design 11-speed rear derailleur for fast and precise shifting performance
• Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
• High tolerance cold forged aluminium link plates and body construction is extremely light and durable
• Compatible with 11-speed HG chains
• Wide gear ratio compatible up to 11-42T
• For use with single chainset
• Weight: 267 g

• Colour: Black
• Discipline: Gravel & Cyclocross
• Speed: 11 Speed