Glass Pyrex Tubes 4 Inch length 10 mm OD 8 mm ID 1mm thick wall 20 Piece Glass Blowing Tubing Fire Polished Ends On Both Sides .
shipping by USPS first class mail with tracking number .Private listing We resolve any problems Dear customers if you have any problems with the item please contact us before leaving any neutral or negative feedback or open case . Send me message about the item and we answer back in less than 24 hours. We believe any issues will be resolvable. Don’t forget to check out my store for the Pyrex glass in different size and length. Thanks