There's nothing more annoying than having cooked the perfect cake and, when you are going to make horizontal slices, making a mess out of it and ending up with "sloped" pieces of cake, that look completely amateurish.
An easy alternative is to use these leveling devices. You stick your knife in the appropriate groove, and strut cutting.
You will end up with a perfectly horizontal cut in your cake!
We have to prepare each shipment individually as they are ordered, so allow it in 3-4 weeks to arrive in the USA/Canada (to be safe) and 3-6 weeks rest of the world, though they are usually delivered much faster.