These Magnetic Nutsetters easily fit into a drill or power screwdriver with a standard 1/4 in. hex.

7/16 in. is commonly used for 1/4-20 nuts

3/8 in. is commonly used for 10-32 nuts and 1/4-20 thread forming screws

5/16 in. is commonly used for 10-24 thread forming screws and 6-32 nuts

1/4 in. is commonly used for 10-12 thread forming screws and 6-32 hex head screws