The product is a lot of 7 V. Mueller Mayo-Hegar & Hu-Friedy Castroviejo needle holders, specifically made by the brand Hu-Friedy. These needle holders are of the Mathieu Plier type and are intended for use in dental laboratory, dentistry, and orthodontics. The model is the Hu-Friedy SCNEVI19E2 and they are made in the United States. Ideal for precise and controlled manipulation of needles during surgical procedures, these needle holders are a valuable tool in various medical disciplines.