AutoDrill's 2100H Series self-feed drill is applied when drilling larger through holes in plate materials up to 5/8" thick.  The 2100H Series AutoDrill self-feed drill uses the principle of removing material with less energy by only drilling the annular section of the hole.  The power required is up to 2/3 less than removing all the material.  The operation results in a slug of material being ejected to complete the operation.

Click on Image to see Color Photo