They mount a durable micro-cellular polyurethane rib tire on a one-piece drop center welded steel wheel with industrial ball bearing hub. No air means no more flats. SKU: 42968066 MFG: 408RBPU32 Shop more products by Martin Wheel. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping charges calculated at checkout. $40.96 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Comes with hub adaptors to fit a 3 to 6-inch hub This general purpose wheel is used on most 6 cubic/feet wheelbarrows 350 pounds load capacity Bore: 5/8-inch ball bearing with universal hub Includes spacer kit to fit most wheelbarrows FEATURES MFR: 408RBPU32 SKU: 42968066 UPC: 098663063739 Brand: Martin Wheel