Specifications:
?? 1. Material

Aluminum alloy (lightweight & rust-proof)

Steel (stronger but heavier)

ABS + Aluminum hybrid (budget-friendly)

?? 2. Length / Size

Typically ranges from 110 cm to 135 cm

Some universal models: 120 cm, 127 cm, 135 cm

Vehicle-specific bars match roof width exactly

?? 3. Load Capacity

Common rating: 50 kg ?75 kg

Premium models: Up to 100 kg
(Always check car manufacturer roof load limit)

??? 4. Mounting Type

Raised roof rails

Flush roof rails

Bare roof (clip-on clamp system)

Fixed-point mount

T-slot / T-track compatible bars

?? 5. Locking System

Anti-theft lock with key

Allen bolt system for tightening

Some models include dual locking points

??? 6. Aerodynamics

Aero / wing-shape profile

Noise-reducing rubber strips

Wind-deflector design

?? 7. Cross-Section Type

Oval / Wing-shaped

Square bar

Rectangular

T-slot aluminum profile

?? 8. Compatibility

Compatible with:

Roof box

Bike rack

Kayak holder

Luggage carrier

Ladder clamps

Cargo baskets

?? 9. Finish

Anodized silver aluminum

Matte black powder-coated

Scratch-resistant surface

?? 10. Included Accessories

Rubber protective pads

End caps

Mounting clamps

Keys / Allen wrench

User manual