Replacement Inner Tubes

{"catalogEntry": { "catalogEntryIdentifier": { "uniqueID": "200514242", "externalIdentifier": { "partNumber": "24309" } }, "description": [{ "fullImage": "/images/product/images/24309_med.gif", "shortDescription": "Martin Wheel Inner Tube with Straight Valve Stem — 18x850-8in., Fits 18x850/18x950/20x800-8in. Tires, Model# T858K", "longDescription": "This Martin Wheel Inner Tube with a straight valve stem is ideal for low-speed applications." }], "offerPrice": "Only $14.99", "wasPrice": "", "salePrice": "", "productRating": "", "productNumRatings": "0", "shippingStatus": "In Stock" }, "catalogEntryURL": "http://www.northerntool.com/shop/tools/product_200514242_200514242" }