...-- --- --- --- --- E6CP-A 6 dia. --- --- c Sold separately only for E6CP- AG5C-C. --- ---ΔΔΔ--- E6C3-A 8 dia. --- --- ---Δ---Δ--- --- --- E6F-A 10 dia. --- --- --- --- c Only Pre-wired Models...https://www.ia.omron.com/data_pdf/cat/rotaryencoder_op_e_8_2_csm504.pdf