It is encoder cable for Allen-Bradley item, Have different length, But the connector is the same: The square is 15Pin, The circle is 17Pin, Please check the photos.
Below is the stock information:
3.5 meter=1pcs=$97/pcs;
4 meter=1pcs=$122/pcs;
6 meter=1pcs=$146/pcs;
9 meter=1pcs=$172/pcs;
12 meter=1pcs$212/pcs;