The Weasler Tractor Cross and Bearing Kit for NA 6 Series is standard and offers a high-quality lube cycle of 8 hours which is acceptable for many applications. This tractor cross and bearing kit is interchangeable for all available Weasler series as well as with standard cross and bearing sets in the market, meaning that a Weasler PTO drive shaft with R-kits can still be upgraded to E-kits or M-kits. The tractor bearing kit also comes equipped with large roller bearings for added durability in demanding applications.