Detailed introduction to sprocket:

Material: the A3 # steel, 45 # steel
Process: heat treatment, high frequency tempering, sandblasting, knives, grain, polishing
Surface treatment: zinc, nickel, chromium plated,
Standard packing: white plastic bags, kit, paper carton packing
Delivery time: within 30 days
Payment: T/T
The authentication: ISO9001
Products sell well in South America, the Middle East, Africa, Europe, southeast Asia, India, Indonesia and etc