I have an 18v Ryobi compressor for inflating car and motorcycle tires. Works great but the guy who screws the plug onto the valve stems needs to find another calling. All of these factors affect compressor performance. Stop wasting half the air I pumped into the tires breaking that stupid connection. With them you simply flip the lever and lose no air. If you have Ryobi or similar, do yourself a favor and get this product.