A NEW NO FLAT, SOLID TIRE AND WHEEL ASSEMBLY. SMOOTH 13X5X6, AXLE WIDTH: 5-5/8" CENTER HOLE: 5/8" OR .625" . REPLACES/COMPATIBLE WITH TCA13769, TCA12430, B1WL58 AND GREAT DANE D38009. HEAVY DUTY WHEELS - 440 LBS MAX, POWDER COATED YELLOW - HIGH SPEED TAPERED ROLLER BEARINGS 6204-2RS. FITS Z510A, Z520A, Z710A, Z720A, Z915B, Z915E, 717A, 727A, 737 AND 757. GREASE ZERK INCLUDED, TIRES MUST BE GREASED BEFORE USE. PLEASE CHECK MODEL NUMBER TO GET PART NUMBER FOR FITMENT, IF YOU HAVE TROUBLE, SEND US YOUR MODEL NUMBER AND WE WILL MAKE SURE IT WILL FIT.