- Used to anchor other components to Tetrafans
- Wraps around frame to secure other components of the Tetrattachment system to the Tetrafan
- Triangular pegs lock into matching notches found on other components of the Tetrattachment Knob-Notch System
- Variance in notch offset on other Tetrattachment components allows for a multitude of attachment positions and orientations
- Attach Knob Tetrattachments to the Tetrafan tip: In-line with either spine, Between the two spines, or Perpendicular to the spine
- Simple Twist-to-Remove design
- 3D Printed using durable, semi-flex TPU plastic
- Available in the same vibrant colors as the Original Tetrafans so they can blend in or stand out - Whichever you choose!
- Personalize your Tetrafans with unique color combinations
