Bosch 2608595495 Flat Drills 26mm x 152mm tough fast cutting action these professional Bosch Spade Drills great for cutting through soft and hard woods, plasterboard and light building materials plus precision ground tip and cutting edges gives accurate dimensional stability during heavy drilling. 26mm Bosch Flat Drills drill up to three times faster than standard spade drills and have a patent pending for self feeding threaded tip and cutting geometry plus Bosch Self Cut Flat Drills are manufactured to exacting Bosch standards from specifically toughened steel. The innovative self feeding threaded tip allows accurate drilling plus a tough 1/4" hexagon socket shank manufactured to DIN3126.