During the frequent use of this tool in our own service center, we have noticed that the splines in the aluminum and plastic version of this tool wear slowly and therefore no longer fit perfectly around the hose nut.
To solve this problem, we redesigned the tool in a 304 stainless steel finish
 
The splined wrench for Scubapro is used to open and close the Scubapro low-pressure hose but it can also very well be used to open and close both the plastic and metal jam nuts found on the Scubapro second stage.
 
The other side of the tool has a 22mm closed wrench to open and close the demand valve body on the older Scubapro second stage.
 
Material: 5mm / 0.2-inch Stainless steel.
 
GTIN: 08720828266861