Cave, Wreck / Anti-Roll Knob for Lola Valves

These are a special knob for Lola valves!

 This knob replaces your standard handwheel knob from shutting off while diving on a wreck or inside a cave!

We feel this is a great little knob that gives peace of mine while inside a cave or diving on a wreck you now do not have to worry about your valves turning off