Product Description:Product Name: Chain Drive SprocketModel: 10ATooth pitch: 15.875mmMaterial: 45# steelFixing method: NO screw holeTooth floor treatment: enamel surface quenchingTooth:22T-32TProcess hole:16mm(Different batches may end up in numerous inside holes)Note: Due to diverse batches of products, the general dimensions can be changed, please consult with the real object!Remarks: If you've got special needs, please touch us, we are able to customise consistent with your needs!Package Include:According to your Choose!