This double-sided tool is designed to facilitate installation and removal of the cover and diaphragm retainer ring of Hollis 100LX, 150LX and 200LX second stages.

The side with shorter teeth will fit the diaphragm retaining ring. The longer-teethed side will fit the grooves on the side of the top cover ring assembly.

The tool is machined from Acetal.

Regulator and parts are not included.