• 10 Pcs Clear Glass Tubes 4 Inches Long 10mm OD 7mm ID 1.5mm Thick Wall Glass Borosilicate Blowing Tubes KWD 5
• 20 Pcs Clear Glass Tubes 4 Inches Long 10mm OD 7mm ID 1.5mm Thick Wall Glass Borosilicate Blowing Tubes KWD 6.500
• 12 Pcs 4 Inches HZCPENG 12mm Diameter 2mm Thickness Borosilicate Glass Blowing Tubes, Transparent Glass Tubing for Glass Making KWD 4.500
• Clear 10 Pcs Borosilicate Glass Tubing 4" Length 12 mm OD 9mm ID 1.5mm Thick Glass Blowing Tubes KWD 5