... 80) 2.Step roller, chain roller 3.Suitable for Sigma escalator 4.OEM D(80) Step Chain Roller for Sigma Escalator1. ... Demarcation, Roller Guides, Chain Guides, Castings, Drive Chain, Drive Gear, Bull Gear, Turnaround, Pillars, Drive Unit, Truss, Remove 3 ... Chains and Safety Brushes. All of our products are suitable or replacement for Hitachi, Mitsubishi, Schindler, Dongyang, Toshiba, KONE , ...