Upgrade kit for original MK16 Oktober Can Seamer and MK19.2 Oktober Can Seamer to allow use of MK16v2 lower adapters. Includes the new design lifter shaft, bearing, spring/washer, and (2) adapters. The included adapters work for 12oz cans and 16oz cans for the MK16 can seamer. 

* MK19 can seamers also require the 16 oz Lower Chuck Adapter (Mk 19.2)