Use the high-pressure seat extractor for first-stage tool for the extraction of high-pressure seats of the piston first-stage.
 
Getting the HP seat out of many piston first stages is proved to be a problem.
When using this tool the HP seat will come out of the piston when it is placed over the tool and a little pressure is applied to the piston.
Scubapro part #43.300.210
 
The High-pressure seat extractor tool is precision machined from white acetal with a stainless steel tip.
 
GTIN: 8720828266625