EVA tires for 12-inch run bikes. ★ Brand new, unused. EVA tires for 12-inch run bikes. (No-brand blank product) I have also installed these on my son's Strider. ★ Includes a rear shaft and nut x1 to prevent feet from hitting (see photo 7). Since feet only get caught on the rear, we only include the rear shaft to reduce costs. If you want a front and rear set, we can offer it for an additional 300 yen. The shaft included in this set fit perfectly when using Strider spacers. I have only used these on a Strider, so if you want to install them on other balance bikes or run bikes, please feel free to consult with me as I can check the detailed sizes of the shafts, etc. The default bearings are metal-shielded grease type. They spin normally, but if you want to try for even more speed, ★ We can offer 4 additional abec9-compatible oil-type bearings for an additional 500 yen. ★ Scratches and dirt may occur during storage and shipping. If you are concerned, please refrain from purchasing. This price includes a 10% Mercari fee + 1000 yen shipping fee, so please refrain from price negotiations. Shipping from Kanto. Thank you.