These short pattern, 120mm stubby Auger bits are part of our Quick Change System, they will fit into any hex or other quick change system including Festool's Centrotec. When running a cable or pipe across several joists, their short length enables you to get between the joists. These stubby Auger bits offer rapid cutting with fast waste removal, while the cutting spurs result in a clean breakthrough. Designed especially for cordless drills, the short body length means as little friction as possible when drilling thereby maximising your battery's power. This set consists of both 16mm and 25mm sizes.