Alfa Tools AUG61411 9/16 x 24 Overall 7/16 Shank Ship Auger Bits Ship Auger Bit - Hex Shank 9/16-inch Bore Diameter, 18-inch Flute Length 24-inch Overall Length, 7/16-inch Hex Shank Single Twist, Single Cutter, Medium Fast Screw Point Quantity - 1 per Pack