For precision box joints at an affordable price, it’s tough to beat this set. Two 8" diameter 30-tooth blades cut smooth, square 1/4" and 3/8" notches and fingers in all types of hardwood and softwood. Switching between the two sizes is easy––just reverse the inner and outer blades. Precision ground C-4 micro-grain tungsten carbide tips are resilient and high-performing for lasting sharpness and accurate joints.