Brand: AutomationDirect Item: Encoder coupling For Use With: JTEKT TRD-S and TRDA-2E series encoders Length: 23.2mm Body Material: Aluminum alloy Bore: 6mm to 1/4in Attachment Style: Setscrew AutomationDirect encoder coupling, 6mm to 1/4in bore, aluminum alloy body, setscrew. For use with JTEKT TRD-S and TRDA-2E series encoders.