... we supply different kinds of borosilicate glass tube/ rod /blow glass 1. Borosilicate 3.3clear glass tubing a. glass tubing Standard length:1500+/-10mm ... Roundness:0.3~1.7mm 2. Borosilicate 3.3 Colored Glass a. Glass tubing Standard size(OD*Wall thickness): 25*4mm,32 ... blue,light blue,green, amber,light yellow,pink,purple, striking red and opaque black.3. Neutral pharmaceutical glass tubing a. Ampoule b ...