| The heat treated 316L stainless steel material has a small coefficient of thermal expansion; |
| 440C stainless steel ball and sapphire gasket, wear resistant and small friction coefficient; |
| Flexible spring plate and fixing screw to fix the optical element, low deformation； |
| GWCH-ZJO-1.0-3 and GWCH-ZJD-1.0-2 install one-inch optical components, GWCH-ZJO-0.5-3 and GWCH-ZJD-0.5-2 are equipped with half-inch optical components. |
