Standard hypodermic tubing is stocked in grades T304 and 316 Welded & Drawn stainless steel in the full hard condition. Custom tolerances, sizes and metals are available upon request. Gauge Outside Diameter Nominal OD Inside Diameter Nominal ID Nominal WT 3G-RW 0.2570 – 0.2610 0.2590 0.2160 – 0.2220 0.2190 0.0200 3G-TW 0.2570 –...