Matt
The angle adaptor is ‘fixed’ (temporarily) at whatever angle you select – to enable the brush to sit flush on the window (whether the pole is near vertical or near horizontal (standing close to the wall or standing far away from the wall.
The ‘swivel connector’ is free to swivel at all times (enabling the brush ends to move forwards and backwards at any time.
This will only sound complicated and confusing, in print.
But, in practice, it means that you can clean windows over side obstructions (e.g. conservatories, outhouses, etc) when the swivel will allow a rectangular brush to ‘twist’ so that, while still sitting flush on the window, the brush edges/sides will be parallel with the frame (i.e. the square corners of the brush will ‘marry up’ with the square corners of the frame).
Believe me. They are great. Like WFP – once you’ve used them, you wouldn’t be without them!
Mike