The MT-4001 and the MT-6001 are designed to compensate for any deformation in the tracks. The Thomson bearing allows a lateral movement and prevent the trolley from getting blocked between tracks. These trolleys are used in the assembly of dual bridges.

The MT-4002 and the MT-6002 trolleys are fixed. The wheels allow the axes to always remain perpendicular to the load. Trey are used on single rails and in the assembly of dual bridges.

The MT-4003 and the MT-6003 axial pivotal trolleys are designed to compensate for any deformation in the tracks. The Thomson bearing allows a lateral movement and prevent the trolley from getting blocked between track. The hinge mount allows for the trolley wheel axles to remain perpendicular to an off-center load. These trolleys are used in the assembly of dual bridges.

The MT-4004 and the MT-6004 trolleys are fixed. The base of the trolley permits an angular maneuverability. The wheels allow the axes to always remain perpendicular to an off-center load. These trolleys are used on simgle rails and in the assembly of dual bridges.

These trolleys are primarily used to move hoses or electrical cables in a continuous motion under these rails.