i am wondering if the wilton plunger/ejector cutter http://images.google.com/imgres?imgurl=http://ecx.images-amazon.com/dp/B0009Y8V1W/?tag=cakecentral-20:&tbnh=114&tbnw=114&prev=/images%3Fq%3Dwilton%2Bplunger%2Bcutter%26um%3D1%26hl%3Den%26sa%3DN can be used with other cutters like these by fmm or pme http://cgi.ebay.com/CAKE-DECORATING-PRIMROSE-CUTTERS-FMM_W0QQitemZ110232602587QQihZ001QQcategoryZ102391QQrdZ1QQssPageNameZWD1VQQ_trksidZp1638.m118.l1247QQcmdZViewItem

The Wilton plunger is much bigger. No, the other cutters won't fit.

As I remember they are not interchangeable
Hope someone who remembers/knows better than I do will let us know.

thanks guys. do you know of any that are interchangable? or just by brand?