For South Bend 16" lathe METAL LATHE 36 tooth Nylon gear Gear OD: 2.740" Gear face width 1.00" Center bore .75 (3/4") Diametrical Pitch 14 Part number: PT27K36H1 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 Thank you.