This Bausch + Lomb iris diaphragm assembly gear is a high-quality replacement part for your microscope. It is made in the United States and is designed to fit most microscopes without any issues. The black metal construction ensures durability and longevity, while the precise iris diaphragm ensures accurate and reliable performance. This gear is perfect for those looking to upgrade their microscope parts and accessories. It is compatible with a variety of brands and is easy to install. Whether you are a medical professional or a hobbyist, this Bausch + Lomb iris diaphragm assembly gear is a great addition to your collection.