China best Needle Bearing Idler Sprockets with Good quality

TECHNICAL SPECIFICATIONS: ANSI Chain Number: 50, No. of Teeth: 17, Shaft Type: Needle, Bore I.D.: 1″, Outside Diameter: 3.719″


  • Steel needle-bearing idler sprockets maintain proper tension
  • Guides the chain around obstacles
  • Prevents excessive chain wear and vibration
  • Hardened steel teeth for durability
  • Requires tightener shaft, sold separately