This set of extended reach screwdrivers (.093”, .125”. .141”, Phillips #00, Phillips #0), is all you’ll need for delicate microscope repair and adjustment. Blades are manufactured from hardened, high tensile strength alloy steel, securely molded into the ergonomic, anti-static handle. Comes in a durable, vinyl pouch. Made in the U.S.A., and backed by a lifetime warranty.