This fits the Hog D1 first stage and is the high pressure balance chamber plug
* Only train personnel should rebuild or adjust first or second stages!
By purchasing and using this product you acknowledge that you have been train in using this type of tool and setting the proper settings for your first or second stages!
Replacing rebuild items improperly may result in injury or death if you have not been trained properly
 "Hog D1 High Pressure Balance Chamber Plug #27")
