a,OTIS 506, ten rollers b,Using for escalator c,Certification:CE&ISO9001:2008 d,Manufacturer e,MOQ:1 ... you a large variety of elevator components/ escalator parts of different brands, such as OTIS, KONE/O&K, Thyssen, Hitachi, Mitsubishi, L.G/Sigma ... and help you select appropriate product and specification for you. Looking forward to your inquiry! HOT!!!OTIS 506 escalator parts expanding chain