- Break-resistant acrylic block FOCUS vials with greater contrast and 60% magnification
- Luminous backing strip allows visibility of the vial in low light conditions
- Shock absorbing end caps with anti-slip surface
- Ergonomic, rigid aluminum profile for maximum stability (890 g/m strength)
- FOCUS vial fluid is not affected by electricity, will not fade under sunlight, prevents bubbling in case of shock and performs without problems at a greater range of temperatures than any other level vial