1.I think it fits any pallet jack, you can also watch youtube videos on how to replace them. 2.High-quality polyurethane material for durability and long-lasting performance. 3.3" x 3.75" size for compatibility with most pallet jacks. 4.20mm ID bearings for smooth rolling and reduced friction. 5.Poly tread for increased traction and reduced wear. 6.Red color for easy identification and added visibility. 7Pack of 2 for a convenient and economical solution.