Endure expandable breathing circuit kits come with a breathing circuit, breathing bag, anesthesia mask, and filter. The 94" adult breathing circuit kit comes with a 94" circuit, 3L breathing bag, size 5 mask, and HMEF filter. These kits are packaged in a case of 20. 

This Kit Contains:

1) Circuit: 94" Dual-Limb Expandable Breathing Circuit, Adult 10' GSL
2) Anesthesia Mask: Size 5
3) Breathing Bags: 3L Bag
4) Filter: HMEF