Wheels Mfg Replaceable Derailleur Hanger / Dropout 303

From WMfg:

• Upgrade or replacement rear derailleur dropouts; stiffer and more rigid to improve shifting performance
• CNC machined from solid 6061 aluminium to exact tolerances
• Stiffer than any original equipment hanger which improves shifting performance
• Still breaks before your frame does to perform its main function
• Direct replacement for original equipment with guaranteed fit
• Black anodised for extra scratch and damage resistance
• Laser etched for easy part identification
• Note: WMD303 is for M12x1 single lead threaded axles. Not for use with the stock Speed Release axle found on the 2019+ SystemSix, which uses a double lead thread. Please order WMD399 for double lead thread

• Colour: Black
• Number of Fasteners: 1 Fastener