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″

FEATURES & BENEFITS:

• 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