Low profile CNC machined black anodised adaptor for C-mount cameras Designed by ProStar optical for optimal low-profile attachment of your GSTAR-EX camera or other C-mount camera. Very useful for attaching to an SCT visual back fitted with optional SCT to T-thread adaptor and SCTfocal reducers to ensure plenty of inward focus capability. Also allows for attachment to the T-thread of ProStar and XAGYL filter wheels. Male C-thread to female T thread Fully CNC machined and Black anodised Thickness: 12.9 mm