This is Yonico’s 50 piece professional quality router bit set. Each bit is manufactured with K-10 carbide cutters with ultra sharp blades! K-10 is a premium micro-grain carbide with outstanding abrasion resistance and high strength for longer cutting life. Bits are precision balanced to within .002″ to virtually eliminate vibrations.
Fully enclosed, high quality lubricated bearings will ensure smooth operation. In addition, heat resistant coating is baked on to prevent pitch and resin build-up. Beautiful solid wood storage case included. Choose between 1/2″ or 1/4″ shanks
These sets are highly rated on Amazon with a rating between 4.2 and 4.7 as of this writing.
Here is an in-depth review of some Yonico bits: