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QD4 Series
The QD4 series includes couplings for 13mm (1/2 inch) ID tubing.
![ID: 13mm (1/2in)](https://koolance.com/image/cache/data/categories/cat_fittings_qd4-m_hose13-74x74.jpg)
ID: 13mm (1/2in)
Generation 4 no-spill quick disconnect couplings which push to connect with a negligible amount of coolant freed. The QD4 series includes couplings for 13mm (1/2 inch) ID tubing.
![Threaded](https://koolance.com/image/cache/data/categories/cat_fittings_qd4-m_threaded-74x74.jpg)
Threaded
Generation 4 no-spill quick disconnect couplings which push to connect with a negligible amount of coolant freed. The QD4 series includes couplings for 13mm (1/2 inch) ID tubing.
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