These carbon steel forstner bits give you a clean, flat bottomed hole from any angle. They are excellent for drilling all thicknesses of wood including thin materials and veneers without breakthrough and splintering. They are guided from the outer rim and will not move off center. This 7 piece boxed set contains: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8" and 1" forstner drill bits.