Dive Line Markers Line Markers Markers for Cave Diving Triangle Markers Dive Direction Tool Indicat Mark your line with these markers for safe entry and exits of cave or wreck. Make of ABS, compacts structure, light weight, strong and Enduring. Bright colour, easy to find underwater, convenient to use. Usually used in conjunction with guide rope for safe entry and exits from caves or wrecks. Suitable for technical diving, Scubas diving, cave wreck diving. Color: B:Luminous Color Material: ABS Package Contents: 1 x Dive Marker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.