YOU ARE PURCHASING A SINGLE 15" X 5" TRAILER WHEEL BLACK WHEEL  THE CENTER HOLE IS 3 1/8  INCH DIAMETER AND THE BOLT PATTERN IS 5 ON 4.5",  BACK SPACING IS 3".  SHIPPING IS FOR LOWER 48 STATES U.S. ONLY.  PLEASE E-MAIL FOR ANY OTHER QUESTIONS YOU MIGHT HAVE. THANKS