1. (Black / 10pcs) Replacement O-ring for:
- Eureka Titanium Nib
2. (Red / 10pcs) Replacement O-ring for:
- Eureka Symmetry & Asymmetry Grip section (placed inside if needed)
- ULTEM Cartridge
- Slim Asymmetry Plug O-ring (For models that don't use eureka titanium nib)