Self feed spade bits

Size Overall length
1/4 6
5/16 6
3/8 6
7/16 6
1/2 6
9/16 6
5/8 6
11/16 6
3/4 6
13/16 6
7/8 6
15/16 6
1 6
1  1/8 6
1  1/4 6
1  3/8 6
1  1/2 6