kit includes: Short screw machine drill which is normally used in drain pan applications where there is no room for a drill motor. You would turn this drill by hand with a 1/2" 12 point socket, counterbore, tap, tap guide install driver tools and 5 inserts p/n 14156 length 12.7mm. Note in blind holes the depth of your hole should be at least 6mm deeper than the length of the insert so a total of 18mm depth for a blind hole.