Spare Parts SPW21 12″ PU Wheel PU Wheel 12-inch High Durability12-inch PU wheel with dimensions 306x40mm, offering high durability and smooth operation for larger applications. $1.00 Request a Quote System Overview The SPW21 is a 12-inch PU wheel designed for high durability and smooth operation. With dimensions of 306x40mm, it is suitable for larger applications requiring robust performance and stability. Specifications Part Number: SPW21 Diameter: 12 inches (306 mm) Width: 40 mm Material: PU (Polyurethane)