The T020-001-ST62 FC to ST 62.5/125 Adapter converts a native FC fiber female port on the Tripp Lite T020-001-PSF Multi-Function Optical Fiber Cable Tester to an ST female port for 62.5/125 multimode cable testing. "62.5/125" is clearly labeled on the unit to differentiate the T020-001-ST62 from other adapters. Included dust caps keep the connectors clean when not in use.