One output shaft for a World Agritech, International Technologies, Behlen, "The International Line"model Super 8 and Super 10 Rotary Cutters! Fits either side gearbox if your gearbox has the 1-3/4" X 20 spline input shaft. Roughly 11-1/2" overall length with 15 tapered splines and a 1.97" diameter for the blade pan and 19 splines for the top gear, threaded at the top for the bearing adjustment nut with the new style cotter pin hole. This is a new OEM output shaft!
Shaft Specifications: 
11-1/2" Overall length
1.97" diameter at blade pan mount
15 tapered splines at blade hub
19 straight splines at top for gear
threaded and drilled at top for bearing adjustment nut and locking pin
OEM part