The Aspir-Guard fits on an endotracheal tube to provide protection against aspiration of  fluid or debris during dental or oral procedures.

Comes with 3 sets of 3 sizes (nine total pieces). Non-sterile. PVA (Polyvinyl Alcohol)

Small
Thickness: 20mm
Diameter: 30mm
Hole Size: 6mm, fits tubes 3.5-6.0mm ID

Medium
Thickness: 25mm
Diameter: 40mm
Hole Size: 9mm, fits tubes 6.5-8.0mm ID

Large
Thickness: 30mm
Diameter: 50mm
Hole Size: 12mm, fits tubes 9.0-10.0mm ID