1、This bicycle tail hook has fine workmanship and CNC precisions machining, which is firm and practical. 2、The rear derailleur of this bicycle is not easily deformed, wear resistant, and has high hardness. 3、The surface of this derailleur hanger is anodized to make it scratch resistant and corrosion resistant. 4、Bright in color, this bicycle rear derailleur is made of aluminum alloy, which is durable. 5、This bicycle rear derailleur has a long service life, and suitable for XDS MX300. Item Type: Derailleur Hanger Material: Aluminum Alloy Features: Sturdy, CNC Machining, Anti Oxidation Applicable Models: No. 21, for XDS MX300 No. 34, for Dahang GOGOBIKE for Merida for Giant for XDS Fengxing for Phoenix Solomon for Phoenix MISSLE MO SSNO, etc. No. 36, for Merida of the Old(for MERIDA 300/ 350/ 360/ 500/ 600/ 650/ 700 )for 2007 Codels for 2008 Codels for 2009 Cross for PRO 1 x Derailleur Hanger