Twist nut for 4545 extrusion - 6mmTube (12 pack)

This small piece of plastic twists securely into 4545-style aluminum extrusion and allows 5.5 to 6.5mm aquarium airline tubes to be managed.

This part, once twisted into place on the extrusion, can support four tubes and keep them well-organized while still leaving them visible.

Strong PETG+ construction is surprisingly sturdy for a small part.