One side are M48X0.75 Male thread; the other side is M42X0.75 Male thread
Converts an M48 female thread to a T2 male thread
All metal construction and anodizing aluminium process; durable for long time use
M48x0.75 Locking Mechanism: Features a M48x0.75 female thread rotation lock ring with precise 2 inch male thread compatibility; eliminating slippage and maintaining optical alignment during extended telescope use
Industrial-Grade Sealing Standard: Manufactured using precision CNC machining to achieve thread tolerance of ±0.01mm; The components are engineered to comply with the M42×0.75 thread standard, which specifies 42mm thread Diameter and 0.75mm thread pitch