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Koch Industries

Koch Industries Idler Sprocket, #40, 17T, 1/2-In

Koch Industries Idler Sprocket, #40, 17T, 1/2-In
Koch Industries Idler Sprocket, #40, 17T, 1/2-In



  • Black oxide finish
  • Does not require a hub
  • Maintains constant tension on your drive with sprockets that press against your chain to take up slack and reduce wear and vibration
  • Also used to change direction of a chain when sprockets are not in a direct line
  • #40 Chain size