NCElec 9pcs Anti Static Brushes for Cleaning Keyboard Computer Cell Phone Lab PCB Dust,Plastic Keyboard Cleaner Brush (9pcs)

Nice selection of different sizes and stiffness. Some of the brushes are quite soft and gentle, whereas others (the "toothbrush" shaped ones) are much stiffer for more stubborn cleaning applications.

Great for brushing off dust from PCBs or metal components. Horrible for plastic or acrylic since the bristles are really hard and cause scratches. For plastic surfaces go with a camera lens cleaning brush.

If I sit down and I hear a wind sound, does that mean something is wrong?