The product is a set of 4 black oxygen O2 sensors with the part numbers 234-4726 and 234-4097, designed for Acura TL models from 1995 to 1998 with a 2.5L engine. These sensors are from the brand NECATUO and weigh 2.11 ounces each, measuring 0.39 inches in height, 3.94 inches in length, and 1.97 inches in width. Perfect for crafting and multi-purpose use, these sensors are a reliable and essential component for ensuring proper engine function in your vehicle.