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MOSFET transistor or printer installation instructions? You figure it out! This Science Formulas silk bow tie will stump even the smartest of engineers.


- Blue and Off-White- Self-tie bow tie, not pre-tied.
- 100% Silk
- Hand-finished by local merchants in New York City.
- Suitable for neck sizes 13.5" - 18.5".  Can also be used on young boys within this neck range.
- Pattern is also available in a necktie.