Check the listing for details. Unit UFC-1200, Mass Flow Controller, Gas- CF4, Range- 50 SCCM, 1/4" M I/O VCR. Condition: Used. Listed at 100.00 USD. Range- 50 SCCM. In- Male 1/4" VCR. Out- Male 1/4" VCR. Be assured that these were not done intentionally.