1.Light Weight for Power Saving 2.Smooth, Noiseless operation 3.Anti-Static ... sought after feature when considering usage such as underground mining where gas buildup can occur, also in dusty ... as cement,coal,gravel,fertilizers,ports,chemicals,quarrying,zinc mining,grain.Roller Diameters: 89mm,102mm,108mm,114mm,127mm,133mm ... ,FAG,NTN.LYC (other brands available on request). Power Saving HDPE Roller