["brand new and high quality\nFeatures:\nMade of high-quality materials, durable, high strength, anodized treatment, no fading.\nUsing full ceramic non-resistance bearing, friction power consumption is reduced, and lubrication is unimpeded.\nThe frame is made of high-strength and lightweight carbon fiber material, which is safe and stable.\n17 teeth big guide wheel, stable and fast speed change\nPrecision screws fix the guide wheel, no looseness, safe riding.\n\nSD2 Compatible For: R6800 6700 6770 6870 9000 9070\nSD3 Compatible For: R7000\nSD4 Compatible For: R8000, 8050, 8070, 9100, 9150, 9170\nBicycle carbon fiber ceramic rear derailleur guide wheel Set only,other accessories demo in the picture is not included.\n\nSpecification:\nMaterial: Carbon fiber + aluminum alloy + ceramic\nSize: app.16x9x8cm/6.30x3.54x3.15in\nOptional Color: Black, Red\nOptional Style: SD2, SD3, SD4\nQuantity: 1 Set\n\nNote:\nPlease allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\nDue to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\n\nPackage Contents:\n1 Set x Bicycle carbon fiber ceramic rear derailleur guide wheel"]