... for it High grade Microscope Eyepiece Focusing Set 1.This eyepiece convergence set is made of LY(aluminum) raw ... ,3. machining parts of Microscope Chengdu Khons Trading Co., Ltd.--High Precision CNC Machining ServicesMicroscope Eyepiece Focusing Set1. ... , grinding parts, stamping parts, casting and forging parts, assembly service.2.Various Machining Materialsaluminum, copper, brass, stainless steel ...