Click to expand Tap to zoom Metro 5MPRX MetroMax® Stem/Rigid Polyurethane Caster, 5" dia by Metro Sale $57.00 | / SKU M-5MPRX 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart PAIR IT WITH + Satisfaction Guarantee The Metro 5MPRX MetroMax® Stem/Rigid Polyurethane Caster is used with the MetroMax® post and shelves. 300lb load rate.