2 Pairs of Cat 1 Quick Hitch Adapter Bushings Set Fitment: Fit for Category 1 3-point tractors, compatible with Speeco John Deere Jeffers and many more quick hitches. Function: Used on CAT 1(Category 1) implements, quick hitch adapter bushings help secure equipment attachments which you want to connect to the back of the tractor. Size: Overall Length: 4" ID: 7/8", fits category I hitch pins OD: 1-7/16", fits 1-1/2" hook on the hitch Material: Quality steel with zinc plated