Spare Arm 4mm (Merica 4 Inch) Spare Arm 4mm (Merica 4 Inch) Catalyst Machineworks This is the same part that is included with the Merica 4 Inch frame as standard. Made of 4mm thick 3K matte twill weave carbon fiber, sporting 12mm motor mounting holes.  Weight: 3.50g

Spare Arm 4mm (Merica 4 Inch)

Code: CM00520

This is the same part that is included with the Merica 4 Inch frame as standard. Made of 4mm thick 3K matte twill weave carbon fiber, sporting 12mm motor mounting holes.

 Weight: 3.50g

This is the same part that is included with the Merica 4 Inch frame as standard. Made of 4mm thick 3K matte twill weave carbon fiber, sporting 12mm motor mounting holes.

 Weight: 3.50g