This is a Freewing Electronic Retract 3.1mm Shaft Type C [E810]

Specifications:

• Body material: plastic
• Trunion material: black anodized metal
• Strut diameter: accepts shafts of 3.1mm in diameter

This retract is used on the main landing gear of the following Freewing aircraft:

• A-10
• F-35 V2
• Cobra/Rebel V2
• FW-190