Eastern Jungle Gym Heavy Duty Tire Swivel for Tire Swing Attachment - PRE-GREASED - Ready to Use Heavy-duty tire swivel is galvanized and constructed with heavy-duty steel Tire Swivel comes copmlete with a grease fitting for periodic lubrication Allows for 360 degree spinning Mounting plate size is approximately 2-1/2" x 4-7/8" with two pre-drilled holes for easy installation Mounting hardware is not included