Caster City manufactures stem casters that have one or more cross holes to bolt the stem of the caster into equipment.  The stems are solid metal with a  round or square shape.  They can be attached to equipment built from structural framing to allow the equipment to roll or move.  The shape and size of the stem determines the type of frame the caster will fit into.  Pins or bolts are installed into cross-drilled mounting holes in the framing and the caster’s stem to secure the caster in place on the equipment.  Load capacities up to 300lbs per each stem caster.