YSM offer wide choice of single,double flange suitable for miniexcavators,excavators and crawler tractor machines ranging for 0.8 to tonne.Special versions suitable for road milling machines,pavers and forestry.Hout forged roller shell to obtain excellent internal fiber flow distribution.Differential hardening heat treatment for bell mouthing resistance and longer wear life.Precision design and advance technology manufacturing of all components to ensure maximum reliability of life span.