m|devices Anaesthetic Circuits are available in a range of different configurations to meet clinical practice needs. Collapsible circuits are available as either corrugated with rotatable Y-connector or as a bain/coaxial circuit with a T-connector and a 2L bag. A paediatric version is available with a Y-connector and a 1L bag, 1.8m, 2.4m, or 3m length circuit tubing.