NE-263-2.5-A Capillaries for use with Micro Tubes 2.5mm OD x 2mm ID x 100mm long, pack/10 Volume at 30mm height: 97ul $78.79 Qty: Add to cart All capillaries are made of Type 1, Class A borosilicate glass. They have uniform round bottoms and have a light fire polish on the open end. Large quantity prices are available upon request.