Stellarvue Male 48mm to Female 42mm Adapter

Stellarvue M48 (male) to M42 (female) Adapter

This Stellarvue SFAM48F42 adapter adapts the M42 x .75 T-thread to the over-sized M48 x .75 T-thread. It adds about  0.9 mm to the M42 male thread length and measures 3.85 mm in total length.