This is the NP205 HD rear output shaft from Advance Adapters. This kit features a 32-spline fixed-yoke output shaft for the 205 transfer cases that originally came with a slip-yoke rear output. The kit utilizes Advance Adapters' exclusive 400M output shaft material and an updated shaft design, making it the strongest NP205 output shaft available today. Advance Adapters also offers this kit for NP205 transfer cases with fixed yokes for just $276. As we went to print, they told us that these kits would be available in mid-summer of 2010.