Specification:dia.15/16''×6-1/2''
Grade: SAE J429 Gr.5 or 8.8 or Tensile strength 74KSI Min
Material: 40Cr、45# 、20Cr
Surface: Waxing
JSCC Track Material
Tel: +86 17712612177 Fax: +86 51981234002
Address:7#1315 ,No.9 ,Taihu East Road, Xinbei District Changzhou ,Jiangsu ,China