... quality, reasonable price 3. No noise, high efficiency NOVO's Sprocket chain:1. Material: Aluminium, Cast Iron, Steel.2. Surface ... Treatment: Black, Phosphate, Zinc Plating, Hard anodized, Nitriding, Dichromate.3. Teeth Number is from 9 to ... .Specifications1.high quality and most competitive in European market 2.Sprocket, non-standard or standard ,OEM availableWhat we have: Our ...