This set contains 5 different sizes of our carbide tipped Precision Shear Forstner Bits：15mm,20mm,25mm,30mm,35mm

【IDEAL CHOICE】Ideal bits for drilling precise flat bottom holes and making arched opening with no chipping in any thickness of wood 【EASY TO OPERATE】Precision ground for heavy use and easily resharpened, they can enlarge existing holes with ease and can bore any arc of a circle. 【DURABLE】Carbide tip is specially designed to through hole cleanly in end grain and thin stock,which make Blade More Sharp And Durable