The vacuum cup insert is an accessory of the SLAB TRANS HEAVY DUTY conveyor from RUBI. The use of this accessory allows to increase the maximum load of the transporter in those cases / situations, in which the professional must handle pieces with an extraordinary weight. The vacuum suction cup allows the SLAB TRANS HEAVY DUTY conveyor to be fixed to any type of surface (smooth, rough or structured). The vacuum cup insert for SLAB TRANS HD is sold separately and as a unit.