Amazon.com: Glass tubes 12 Piece, 8 Inch Long Borosilicate Glass Tubes OD 12 mm Thickness 1.5 mm Industrial Glass Tubing for Tall Cups (12mm / Clear) : Industrial & Scientific
Amazon.com: Glass tubes 12 Piece, 8 Inch Long Reusable Glass Straws Borosilicate Glass Tubes OD 10 mm Thickness 1.5 mm Colorful Industrial Glass Tubing for Tall Cup (10mm / Multiple Colors) : Industrial & Scientific
Devardi Glass Boro Rods, 1 lb, COE 33, Very Light Blue EE Borosilicate Solid Rods: Amazon.com: Industrial & Scientific
MECCANIXITY Borosilicate Glass Stick 5.91" Length 5mm Dia Stir Rod Mixing Tools with Both Ends Round for Lab Kitchen Science 6Pcs: Amazon.com: Industrial & Scientific