The product is a pack of 100 Phenomenex Strata® NH2 chromatography tubes with a particle size of 55 um and a pore size of 70 A. Each tube contains 100 mg of material with a volume of 1 mL, making them ideal for biological laboratory use. Known for their high quality and reliability, Phenomenex is a trusted brand in the scientific community, ensuring that these chromatography columns will provide accurate and consistent results for a variety of applications.