Flat tips were the original airless paint sprayer tips but many still use and prefer them. These tips cost less but are much harder to clean and spray a similar quality fan to RAC V tips. As they are harder to clean they should be used only with clean, strained and filtered materials and may not be appropriate when changing of tips is a nuisance such as on a ladder. When using these you should have several on hand. Fits Flat Tip Guard only.