Abstract: A dolly system that is constructed to removeably cooperate with bulk material can(s) or bin(s) to facilitate convenient transport thereof. The dolly system includes a base having a plurality of caster wheels. A bin facing side of the base includes a boss and one or more threads that are shaped to index a respective material bin relative to the base and restrict axial translation therebetween. A catch is defined by the base and engages the bin to resist opposite rotational translation therebetween. The dolly system can include an optional brake assembly supported by the base and selectively operable to resist translation and/or tipping of the dolly system and one or more optional connection brackets for selectively connecting a plurality of discrete dollies and respective bins relative to one another.