BioQuip’s and Ento Sphinx brand, material from stainless steel pins are recommended for use in humid climates. These high quality pins are manufactured in the Czech Republic. Heads are nylon and length is 37 mm (1.46″) for BioQuips and Plastic heads are golden coloured and length is 39 mm (1.54") for Ento Sphinx.
Pin diameters start at .25mm/.010″ for #000 and increase in diameter by +.05mm/.002″ for each size pin. The most commonly used sizes for general pinning are #2 and #3.