This basic and indispensable piece of equipment

is made of delrin and comes in two different widths, 34mm and 45mm,
- 34mm width holding 30 meters of line, S80B (black)
- 45mm width holding 45 meters of line, S80BW (black)

- 45mm width holding 45 meters of line, S80WW (white)
all with a diameter of 80 mm and unparalleled

holes for smooth clipping.

Discs inner edges are chamfered.
The line is a 2mm thick polyestersilk line

woven to be slightly negatively buoyant.