Simex RW 500 Wheel Saw at work in Milan: fiber optic installation Products:RUEDAS ZANJADORAS (RWS/RWA) Added in Videos on 30/03/2018 The RW 500 was recently purchased by I.S.A.C srl and chosen for its productivity and precision. We spoke with Corrado Buttò, site manager for I.S.A.C. srl during the excavation of a new fiber optics segment in Cormano (Milan).