There are 2 types of mega attys type A or type B. Type A is tapered and looks like a cone. Type B is not. The one Kusha has pictured is type B. If you have a tapered atty that looks like a cone then it is a type A and type B drip tip will not fit it, and vice versa.
Not just the attys are different, the carts for these are as well. Jack sells both A and B type attys and carts. Heaven Gifts is the only one that I know of that sells type A and B drip tips at this time. I invite anyone to post another distributor, but I have yet to find one.