Atlantic Shackle Breaker Underwater Cut-Off Saw Rotary action displaces water creating

Rotary action displaces water creating a vacuum under the tool

The Stanley 03974 1/2" FNPT flush-face coupler set is used with Stanley underwater tools

The standard 1st stage overpressure relief valve comes set at 175 to 185 psi directly from the factory

This simple yet unique design has a flow-by piston that mechanically balances the air of the first stage ensuring excellent breathing characteristics at full or low cylinder pressures

Atlantic Shackle Breaker Underwater Cut-Off Saw Rotary action displaces water creatingThe Atlantic Diving shackle breaker used to break shackles open. The shackle breaker is made of 5 8" 303 stainless steel so you do not have to worry about corrosion.