What is the minimum diameter of glass tube available? Is there any tube available less than 1.15mm diameter?

The inner diameter of this item is 1.15mm +/- 0.05mm. We do carry item# GS-51628 which is a Micro-Hematocrit Capillary Tubes - Borosilicate Glass - Pre-Calibrated that has an inner diameter of +/- 0.55mm. This is our smallest capillary tube.