1PCS Aluminum Alloy Horizontal Folding Arm 30mm 35mm 40mm Carbon Tube Fold Joint Connector for RC Plant Protection Drone

Specification:
- Item name: D30/35/40mm horizontal folding arm
- Material: aluminum alloy 
- Inner diameter: 30/35/40mm
- Color: black
- Weight: about 166.8g(30mm), about 172.9g(35mm), 248.4g(40mm)
- Used for rc plant protection drone, for model multi-copter airplane

Note: size is manual measurement, there are exist errors

Package included:
1pcs x folding arm