ZWO M42 Filter Drawer
ZWO 2-inch Filter Drawer with 21mm ring design is independently developed by ZWO, which includes M42 * 0.75 male thread (camera side) and M48 * 0.75 female thread (filter end), M48 * 0.75 female thread (telescope side) as well.
The double strong magnets create stronger adsorption, easier installation and pulling out.
M42 * 0.75 male(external) thread (camera side)
M48 * 0.75 female(internal) thread (filter end)
M48 * 0.75 female(internal) thread (telescope side)
Suitable for 2-inch astronomical filters