M68x1 Male to M54x0.75 Male Adapter with Internal M48x0.75

This precision thread adapter converts M68x1 male threads to M54x0.75 male threads, making it ideal for connecting large-aperture telescope focusers to full-frame cameras and other imaging accessories. The adapter features an internal M48x0.75 female thread, allowing for mounting of 2-inch filters or other M48-compatible components without requiring additional adapters. With its compact 1.4mm backfocus thickness and rigid construction, this adapter is particularly useful for astrophotographers seeking to minimize vignetting while maintaining optical efficiency and proper backfocus distances.