... glass tubes with various sizes and colors C.O.E3.3±0.1(10-6k-1)Available colorsClear, Opaque white, opaque ... , redRegularly stocked tubing size7x1.5mm,8x1.5mm,9x2mm,12x2mm,12x2.2mm,13x1.8mm,16x1.8mm,16 x2.4mm,19 x3mm,50 ... ,60 x7mm,60 x9mm25 x 4mm, 32 x 3.2mm, 32 x 4mm, 38 x 3.2mm, 38 x 4mm, 44 x 4mm, 51 ...