The spool body is CNC-machined from a solid Delrin rod. The spool is loaded with 50m (+/- 2m) of Dacron line. This spool can be used as a safety reel for cave or wreck dives, as well as an SMB spool.
The spool can be purchased with a dry gloves insert, also made from Delrin. The insert provides a secure grip, allowing comfortable use with dry gloves.
Dacron is much stronger and stretches less than nylon, and is also more resistant to mechanical stress. We use HiViz Line in a special bright yellow color. It is more visible both in caves and in open water.