4" Polyurethane on Aluminum Swivel Caster SKU# 4-81-POLY-ALUM Alt. SKU# — View Product Specifications Configuration For applications where water is present, select Delrin Bearing from the "Wheel Bearing" drop-down option above.Swivel Lock and Raceway Seal cannot be ordered together on this item. Select a Brake:* No + 0 Side Lock + $4 Select a Swivel Lock:* No + 0 Yes + $3.5 Select a Raceway Seal:* No + 0 Yes + $2.5 $73.95 QTY Add to Cart Contact Us today for expert guidance, or to receive special pricing on high-quantity orders. Lead Time to Ship, Shipping & Returns Lead Time to Ship: 1-2 Weeks 30 Day Returns Shipping and Returns