Optec 3600 to Optec 4300 Dovetail Expansion Ring Adapter
This Optec 17870 Expansion collar allows the use of any OPTEC-3600 male dovetail mount to fit the Gemini or TCF-S3 Low Profile focusers.
The Optec 3600 Expansion to 4300 Standard Dovetail Adapter is made of high quality aluminum and black anodized.

Description
This Optec 17870 Expansion collar allows the use of any OPTEC-3600 male dovetail mount to fit the Gemini or TCF-S3 Low Profile focusers.
The Optec 3600 Expansion to 4300 Standard Dovetail Adapter is made of high quality aluminum and black anodized.

















