self-contained breathing apparatus (SCBA) set with specific features:

1. Open Circuit Positive Pressure Breathing Apparatus: This means it provides a supply of compressed air to the user and maintains positive pressure within the mask to prevent contaminants from entering.

2. Composite Back Plate: The back plate, usually made of a composite material, provides structural support for the apparatus.

3. Nylon Harnesses: These strong nylon straps secure the SCBA to the user and ensure a proper fit.

4. Reducers: Components that control the flow of air from the cylinder to the mask.

5. Warning Whistle: An audible alert system that might indicate low air supply or other potential issues.

6. Rubber-Shrouded Pressure Gauge: A gauge to monitor the pressure of the air within the cylinder.

7. Cylinder: A 6-liter steel cylinder with a pressure rating of 300 bar, providing approximately 45 minutes of air supply.

8. CCE Approved Full Face Mask: The mask that covers the entire face and is approved by CCE, conforming to safety standards like EN 136(1998) and EN 137(2006).

9. Hoses: Meeting specific standards (SAE J 517 / EN 854) and certified to IS 10245 part II, ensuring the reliability and safety of the air delivery system.

This setup seems comprehensive and designed for safety and durability according to established industry standards. The 45-minute duration should provide sufficient air supply for various scenarios where such equipment might be necessary