Cove router bits are one of the most common profile router bits used today. Available in a wide variety of sizes (or more accurately — radii), they are used to make furniture, drawer fronts, cabinet doors and even joinery!
Cove bits can be purchased separately, or buy them buy the set to make sure you're ready for any eventuality.
These bits can be used hand-held, or in a router table. Commonly available with a bearing to guide the profile cut, they can also be used with the fence adjusted to make the cove cut less deep.
When matched with a roundover bit, you can create the classic drop leaf, or rule joint. This joint is found on drop-leaf side tables and card tables popular in the 18th Century.
Infinity cove bits use a shearing angle to provide a cleaner cut with less effort. This angle also reduces tearout and provides a great surface as a profile, or as part of a matched joinery set.