Leoben Aluminum Finger Spool Reel  is an important piece of  diving equipment especially in technical, wreck and cave diving.it helps divers  to return to their starting point. By simply anchoring a line to a point just outside the cave opening or at the entrance point of the wreck you can unroll your line from the spool as you progress through the dive and when it is time to exit the cave or wreck , turn around and slowly wind the line back onto the reel until you’ve exited the cave/wreck.

- See more at: http://www.leobendivegear.com/30m-100ft-Aluminum-Cave-Scuba-Diving-Finger-Spool-Reel-pd756574.html#sthash.1Y2tGY6J.dpuf