Different bases for older Hikvision turrets (DS-2CD2332-I, DS-2CD2335FWD-I, DS-2CD2342FWD-I etc) with diameter 127mm.

One type comes with grommet, and you can choose, if you pull the cable first and then crimp RJ45 connector, or you choose a split type, where you can use finished cable.

Type with leveling marks you can use with spirit level. But I don't know already, why I did it, as you can rotate the turrets freely. :-)

Wall templates are used mainly for inclined variants. Radius 42,5mm is from center of template to center of the holes for screws.