South Bend 9/10K METAL LATHE 32t NYLON gear This is a FDM Nylon gear stack (compound gear) 0.625 Bore - install directly on to the sleeve - no bushing needed This gear made out of out of Nylon - tough and flexible plastic No lubrication required Only Nylons should be used for gears where a slippery surface is desired. All other materials (PLA, ABC, PET, etc.) will grind creating a plastic dust and eventually fail! For details, please review all pictures and compare to OEM gear shown Do not waste money for ABS, PLA plastic gear that may strip or melt Gear face width .375 (3/8") 32t Center bore keyed .5625 (9/16") Diametrical Pitch 18 Prt number: 32K32N1 Thank you.