Click to expand Tap to zoom Metro 9994Z Zinc Plated Post Clamp by Metro Sale $5.40 | / SKU M-9994Z 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart The Metro 9994Z Zinc Plated Post Clamp is an accessory for Super Erecta® Shelving to maximize the strength between two buttressed units.