Promax WB70016 Forstner Bit Set, 16-Piece 16 bits include: 1/4-Inch, 3/8-Inch, 1/2-Inch, 5/8-Inch, 3/4-Inch Presharpened bits are ready to use, with hex shaft for non-slip accurate drilling No surface tear outs with flat bottoms and smooth sells Includes a durable, molded plastic carry case Use this tool accessory only in accordance with the specific power tool equipment operating and safety instructions