This is a 12V compressor that can inflate truck and trailer tires. We have a Ford F-350 and are towing a 5 wheel RV. Standard 12 volt tire inflators cannot inflate truck tires to 80psi or RV tires to 110psi. This device does it with ease. This is the best 150psi portable compressor we've tried. Its small size is an added benefit. Good product!