U.S. Art Supply
Black Telescoping Drafting Tube - Outside Diameter: 7-1/4 inch, Inside Diameter: 6-5/8 inch, Length: 32 to 52 inches
Black Telescoping Drafting Tube - Outside Diameter: 7-1/4 inch, Inside Diameter: 6-5/8 inch, Length: 32 to 52 inches