Grizzly G1874 Improved Dowel Jig
Automatically centers itself on round square or irregular shapes. handles stock up to 2-Inch thick. drill-hole sizes are 1/4-Inch 5/16-Inch 3/8-Inch 7/16-Inch and 1/2-Inch. six hardened steel bushings are provided: 2 each of 1/4-Inch 5/16-Inch and 3/8-Inch. you can drill two identical parallel holes without moving the jig. easy to use..
