This is the extension bar for a ZEQ25/CEM25 mount. It also works for a iEQ30 mount. This attaches to the original bar and will create more counterbalance weight.
The Crayford GSO eyepiece lift with linear bearings is a modern, technically advanced spectacle lift, which is a breakthrough among this type of device. The structure was designed based on two precision bearings moving on a steel rail, which improves the precision of adjustment and ensures increased load capacity (4.1 kg) compared to standard lifts. This allows stable attachment of even heavy astrophotography accessories.