Benz Microscope Premium Black Enameled Insect Pins. Manufactured in the Czech Republic from the same factory that produced the reputable BioQuip products, These pins are the most commonly used design for entomology. Fabricated from spring steel with a smooth, black enamel finish to protect against rust. Gold nylon heads provide ease of use and a professional look. Box contains 10 envelopes with 100 pins each. Available in sizes 000 through 4. (Note: We are in the process of updating our packaging. Labels may differ slightly from box to box, however, we will attempt to keep labeling consistent within each order.)