Brand: AutomationDirect Item: Encoder coupling For Use With: JTEKT TRDA-20 and TRDA-25 series encoders Length: 32mm Body Material: Glass fiber reinforced resin Bore: 3/8in Attachment Style: Setscrew AutomationDirect encoder coupling, 3/8in bore, glass fiber reinforced resin body, setscrew. For use with JTEKT TRDA-20 and TRDA-25 series encoders.