This add on table spacer has been designed to work with our Cannular Can Seamer (NOT for Semi-Auto Pro). As you would know the Can Seamer has been designed to work with the 500ml cans right out of the box however for smaller cans such as the 330ml and 375ml cans this type of spacer is required to lift the can up a bit higher.This particular table spacer has been designed to work with the KegLand 330ml Cans (KL13093) but it can also work with various other brands of cans from 330ml - 375ml.