Another useful tool to keep in your toolbox or overall pocket is this universal windscreen washer jet adjuster from Laser Tools (part number 8091).

As well as the standard jet adjusting tube and cleaning needle, the tool is supplied with interchangeable heads that let you adjust the special jets fitted to Vauxhall/Opel (Astra J and Insignia) and Mercedes-Benz (W204, W207, W212, W218 — equivalent to OEM 589 02 16 00).

The handle features an internal hexagon and magnet to ensure the interchangeable heads are held securely in place during use.