Click to expand Tap to zoom metro-5mb-super-erecta-stem-brake-caster-5-dia by Metro Sale $40.30 | / SKU M-5MB 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart PAIR IT WITH + Satisfaction Guarantee The Metro 5MB Super Erecta® Stem/Brake Caster is used with Super Erecta posts and shelves to create a mobile shelving unit. 200lb load rate.