Irwin 42922 1-3/8-Inch by 3/8-Inch Shank Forstner Bit N/A Imported This product is easy to use. This product is highly durable This product is manufactured in China 3-1/2" overall length, 1-3/8" diameter, .375" round shank Bores precision holes at any angle Extra sharp cutting edges drill smooth, flat-bottomed holes Fit 3/8" drills and drill presses