(1) Aftermarket Interchangeable Swing Box Gear. 50D, 50E, 40B, 40D, 40E, 45, 45B, 980B, 80B, 1280, 1285, 1286. Tech Info: w/ 63 Teeth, 2-1/2 I. Interchangeable w/ Part Number: S612546.Only the 48 contiguous States in the U. This item is in the category "Business & Industrial\Heavy Equipment, Parts & Attachments\Heavy Equipment Parts & Accessories\Other Heavy Equipment Parts & Accessories". The seller is "stevenslake" and is located in this country: US. This item can be shipped worldwide.