Daiwa 1500SK Keiryu Line Holder, with nine of it's small line winders inside the plastic case, and one outside the case.
Close-up of Daiwa 1500SK Keiryu Line Holder's individual line winder.

Daiwa 1500SK Keiryu Line Holder

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$39.00

The nicest keiryu line holder I've found is the Daiwa Tankei 1500SK, which is a waterproof case holding ten individual line winders. Do you really need ten? You will use at least a couple for tenjo lines, the slightly thicker, possibly hi-vis upper portion of the keiryu line system. You will use more for the lower portion of the lines, as that is where you will have the variation in line length and weight. You will end up using all 10!