This listing is for (1) Butyrate Cellulose Tubing.
Model: 28-000807-000B​​

Specifications:
Type: Tubing
Material: Butyrate / Cellulose
Color: Clear
Condition: New
Length: 12" 
Outside Diameter: 4-3/4"
Inside Diameter: 4-3/8" 
Wall Thickness: 3/16"

The item is exactly as pictured.