The product is a lot of 750 Kimble Chase 73500-1275 disposable culture tubes made of borosilicate glass. These tubes have a volume of 12x75mm and are ideal for use in laboratory and medical settings. The Kimble Chase brand is known for producing high-quality glassware, making these culture tubes a reliable and durable option for storing and transporting biological samples. 3 boxes of 250 tubes each.