Jackson Original Regular Length Trach Tube. Size 8. Outer diameter 12.2mm. Inner diameter 9.6mm. Length 69mm. Have a 90 degree curve and a swivel lock to hold the inner cannula in place. Sizes 00-8 have a small, rectangular shape. Manufactured of stainless steel to exacting standards and under strict quality controls. Dimensions include tube size, outside diameter, inside diameter and length. Measurements are taken along the inside curve for the tube length. UOM: 1/EA.