Portable Cables Reels are built inside a Pelican for hand carry. PCRs are stackable and store electrical power, signal and fiber optic cables for easy transportation and deployment in the field.
OD56mm Unique Slip Ring 12.7mm Bore Size 12 Circuits 10A Per Circuits Cable Reel Slip Ring 400RPM Working Speed - AliExpress
Homebuilt Rovs
Slip ring - Wikipedia
plastic cable reel with slip ring| Alibaba.com
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