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Technical Diving SpecialtiesAdvanced and focused aspects of scuba diving with a technical training edge, ranging from caverns and caves, public safety diving, wreck penetrations to decompression diving and everything in between.
Don't know the correct size, but what I did a while ago was measure the circumference of my stage bottle. Then brought my tape measure to Pep Boys and pulled out all the tire tubes one by one and measured until I found one that was a tad smaller than my stage measurement.
Linear Mode
