I've bought from Amazon a 12V mini aluminum compressor, when ordering my adapter was just as "is often bought" offered and I have ordered this without me to look at the detailed product specification. I've assumed that all accessories which is operated via the car's cigarette lighter and thus works. After delivery, I discovered that the compressor so that can not be operated and complaining it from the seller. The seller then referred to the product description below on the supply side, in the description it says "WARNING **** Not for car vacuum cleaner, cooler, pump and compressor suitable! ***". I wonder why is not already indicated in the heading.