153 rubber joints, overload Wang series, long service life! Details of the parameters: diameter: Phi 105mm, width: 52mm; two holes center distance: 110mm aperture: 19 mm diameter was designed for overload design, meet the requirements of the bad road and transportation conditions. Performance characteristics: 1 thickening of the overall shape of the outer steel casing, stress more concentrated, longer life! 2 double iron package technology, effectively prevent rubber cracking! 3 thick self-lubricating composite core, three way one for overload!