From the Manufacturer
The DK1100 FP is a floor-standing, entirely pneumatic powered, fully-automatic pocket hole boring machine. 110-120 psi is recommended to power the direct drive air motor, hold-down clamp and forward motion cylinder. The DK1100 series features a reliable, one-step drilling operation through a hardened steel drill guide to produce the pocket hole. The hole is round sided with a flat bottom that allows a screw head to seat flushly in the bottom of the pocket and the hole to be plugged with wooden dowel. The DK1100 series are built to be extremely quiet for operator comfort and their simple design results in very fast drill bit changes.