Topcon ES & IS and Sokkia CX series data collector cable. Coiled Data Collector cable with DB-9 serial connector on one end and Twist on connector on the other. This works with all Topcon ES / IS series instruments with Twist on connector. Also works with most newer Sokkia series total stations like the CX. For Topcon GTS & GPT and other older Topcons with push on connector click here: For older Sokkia SET series click here: