We utilize our experience and expertise on all our products to provide the best in the industry All our products feature premium components and are backed by the best team in the industry All products are engineered, assembled and tested in the USA We are trusted by millions of people for specialized products to meet their needs where they live, work and play Features- 12 Piece- Easy installation on hand truck ItemNo s 31623, 143752, 188217 and 365059 sold separately- The kit also contains four connectors that are specially designed for use with the Northern Industrial Tools 660lb capacity Phandle extrawide hand truck Item 188201, sold separately- Flatfree rubber foam tires never need air- Made in TaiwanSpecifications- Rim Size in 5- Tire Size 10 x 32- Bore Diameter in 42587- Outside Diameter in 10- Bearings Included Yes- Hub Width in 208- Load Capacity lbs 300- Rim Included Yes- Tread Type Sawtooth- Weight 12 lbs SKU: NRNTL10324