Questions about Hama Lenspen, cleaning pen

The brush hairs of the Lenspen are quite soft and around 20 mm long. The shaft of the Lenspen is rather chunky. For the intended purpose, the Lenspen is very good. For cleaning a CPU cooler, a soft watercolour brush in combination with a hoover is more appropriate and cheaper.

No. The cleaning pen comes from the Hama brand.