Make dual setup and removal as fast and easy as possible with tractor dual wheel parts from Gemplers. Whether you are in the shop or handling an emergency in the field, our dual wheel parts can make the process simple in any situation. We have pitch or coarse thread eye hook bolt in a variety of different sizes. From 18mm to 22mm or 7/8", get your J-hook bolts too in lengths ranging from 8" right up to 40" and a whole range of other parts in many different sizes and styles.