This is an oxygen probe suitable for use in high-temperature and harsh conditions. The ceramic tube and zirconia head inside the metal outer casing are fragile. Therefore, extreme care must be taken when removing the oxygen probe to avoid unnecessary damage. Marathon has designed special packaging to ensure the safe transportation of the oxygen probe to the job site. The packaging box consists of a sturdy cardboard box and two foam pads that support the oxygen probe; please keep it well-protected. If you need to service the oxygen probe, the original packaging is essential. Should you encounter any issues during use, feel free to contact our sales team at any time; we are committed to providing excellent service.