An excellent product and usefull for all kind of things, I use it mostly for cleaning my PC equipment. One thing to be very aware of is that it is NOT compressed air, it is a gas and can be LEATHAL if used wrongly
I recently paid £13 for 1 "Fellowes turbo air duster" which lasted about 4 minutes of short use which was only 100ml can.so i thought i would buy these 4 pack of 300ml at £20 and was using 1 of them for 2 days and it has just run out.would recommend to anyone looking for a good duster (note that it sometimes sprays a liquid out but as long as your electronic device is turned off it wont harm it as it instantly evaporates
Compared to other air dusters lasts ages longer and straw stays secure, better value in packs of 4. Only thing that can be annoying is obviouslt after a long usage it will get very cold, but affects all compressed air dusters.