Review on 🚗 AUTSCA Portable Air Compressor Tire Inflator with Pressure Gauge - Ideal for Car, Bicycle, Motorcycle, and Basketball Tires - 12V DC 150PSI Electric Auto Pump- Includes LED Light - Perfect Fathers Day Gifts by Choice Maynard

I was initially in love with this inflator based on the claims in the Revain listing (4 hours continuous use) but I completely lied. I am very disappointed with the development of this product. Here is my conclusion from the disassembly: The drive gears are made of plastic. Piston and O-ring are made of plastic. Most of the waste heat is generated. - The cylinder block appears to be zinc die-cast with some small heatsinks, but it is not copper as the listing states. - The wire going to the current limiting resistor for the LED wasn't even soldered to it (they used a small crimp to attach the wire to the resistor). Overall, this is a decent tire inflator that inflates tires, but a far cry from the marketing dope they offer. list. It's clearly not going to work 4 hours straight and I wish these companies were honest on their lists.