There are different wrenches for each size so you can use one wrench to hold the adapter and another to loosen the hose
In order to better protect AN accessories from damage during the tightening process, our wrenches have strict tolerances. The opening of the wrench is as follows: AN3 - 0.505" to 0.510" AN4 - 0.568" to 0.572" AN6 - 0.693" to 0.698" AN8 - 0.880" to 0.885" AN10 - 1.005" to 1.010" AN12 - 1.255" to 1.260" AN16 - 1.505" to 1.510" AN20 - 1.818" to 1.823"
Each AN size features an open box end with a 90-degree angle and another with a 180-degree angle. Compatible with both aluminum and steel AN fittings.
A set of double-sided combination wrenches: AN3, AN4, AN6, AN8, AN10, AN12, AN16, AN20 (8 wrenches in total)