• Front side - 2" inner diamater
• Rear side M53x1 male thread

Machined of high quality aluminium alloy.

This adapter allows using some focusers on 2 inch telescope diagoals.

M53x1 thread corresponds to focusers of an older model Vixen brand telescopes.

This adapter has a through 2" bore , so it can slide over 2" tube till the tube is stuck against a focuser inner elements. This allows shortest optical path if this is necessary for your application.