The Model 7 and SL1 Oktober Can Seamer comes with a B64 can profile upper chuck, which fits the standard option cans. To use the 360 End®, a 360 End® upper chuck must be installed. You can purchase this upper chuck Here.

12oz /355ml beverage cans INCLUDING ends (tops). 

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When choosing “end type” make sure the option chosen matches the upper chuck profile of your seamer.