Other than that range of Professional, CraftPro, and Trade router bits we also supply a selection of more specialist router cutters. You might find that purchasing a set of router bits is more practical as it contains a selection of different cutters conveniently packaged, such as kits for doll’s houses and starter kits. Replacement tip router cutters are ideal for high-end uses who want to limit tool down time and need the option of having blades that can be easily rotated or replaced as needed. These Rota-Tip cutters include solid tungsten carbide blades held by retaining screws to a ground steel body. Spiral router cutters have flutes that wind around their body in a helical shape and are designed to produce flat-bottomed grooves for a wide range of applications. Here is an entire range of STC spiral router cutters, but you can also find a selection of spiral cutters in the Professional HSS and TCT ranges.