Professional class
▲ Double sealed ball bearings. ▲ Built-in bumper guards. ▲ Adjustable to fit various sizes of flange and I-beams. ▲ Use on straight or curved track. ▲ Can be installed or removed at any point along the track. ▲ Conforms to CE safety standard. ▲ Conforms to ANSI/ASME safety standard.
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