- Models
- Butterfly Air, Concave-convex, Water drop, Water drop air, Air, Butterfly
- Size
- 16 mm x 8 mm for Water drop model, suitable for wider frames and recommended for lenses below 400 degrees
- Size
- 16 mm x 8 mm for Water drop air model, suitable for wider frames and recommended for lenses above 400 degrees
- Size
- 15 mm x 7 mm for Air model, suitable for wider frames and recommended for lenses above 400 degrees
- Size
- 15 mm x 7 mm for Concave-convex model, suitable for wider frames and recommended for lenses below 400 degrees
- Size
- A16 mm x B12 mm x H13 mm for Butterfly model, suitable for narrower frames and recommended for lenses below 400 degrees
- Size
- A16 mm x B12 mm x H13 mm for Butterfly air model, suitable for narrower frames and recommended for lenses above 400 degrees