Amazon.com: PQAPGT 6 Inch Long 5 Colors 10 Pieces Glass Borosilicate Blowing Tubes 12 mm OD 2mm Thick Wall Tubing for Various Applications : Everything Else
Amazon.com: PQAPGT Colorful 4 Inch Long 5 Colors 10 Pieces Glass Borosilicate Blowing Tubes 12 mm OD 2mm Thick Wall Tubing : Everything Else