Freud Seven Piece Carbide Forstner Drill Bit Set (1/4" to 1-3/8" Dia.) (FC-107) Micro-grain carbide/titanium tips ensure cleaner cuts and long lasting sharpness Wood case for easy storage and protection. Center locating spur Sizes are 1/4", 3/8", 1/2", 5/8", 3/4", 1", and 1-3/8".