Implementation of challenging project on cable trolleys for I-beam

Our company has implemented one of the most challenging projects involving cable trolleys with  460 mm saddle with round cable for I-beam. We made photos to compare different types of small cable trolleys:
Version for A and C2 profiles as well as two level trolleys with 160 and 260 mm saddles for I-beam.
Trolleys are equipped with three types of rollers including supporting rolls.
Welcome to cooperation!