Carbon Fiber Sq Outer with Rnd Inner Tube 4mm x 4mm x 2.5mm x 1000mm

The CFSR44251 Carbon Fiber Square Outer Round Inner Tube 4mm x 4mm x 2.5mm x 1000mm is a uniquely profiled pultruded carbon fiber tube featuring a square outer cross-section with a round inner bore. At 4mm x 4mm outer dimensions, 2.5mm inner diameter, and 1000mm (1 meter) length, this tube combines the flat-face bonding advantages of a square profile with the bore of a round tube — ideal for RC aircraft, drone frames, and robotics applications requiring a square exterior with a hollow core.

Key Features

• High-strength pultruded carbon fiber construction
• Unique square outer / round inner profile
• Exceptional strength-to-weight ratio
• 4mm x 4mm outer x 2.5mm inner bore x 1000mm length
• Flat faces for easy bonding and alignment
• Easily cut and shaped with standard hobby tools

Applications

• RC aircraft structural members requiring square profile
• Drone frame arms and structural members
• Robotics frames and linkage members
• Custom RC builds requiring square-profile carbon fiber

Specifications