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Inner diameter (mm) and length (inches) of various needle types.
| Needle type | Catalog number |
Gauge | Inner diameter (mm) |
Length (inches) |
|---|---|---|---|---|
| Hypodermic needle | 210110 | 22 | 0.413 | 1.5 |
| Spinal needle | 26967 | 22 | 0.413 | 3.5 |
| William’s cystoscopy needle | 13828985 | 23 | 0.337 | 17.7 |
| Hypodermic needle | 201122 | 27 | 0.21 | 1.5 |
| Spinal needle | S2735 | 27 | 0.21 | 3.5 |
| Oro-tracheal injector (Integra ENT) | 1650025 | 27 | 0.21 | 9.5 |
