Bosch Self Cut Flat Wood Speed Drill Bit Wrap 6Pc Set 2608595424 With improved efficiency and performance, these Bosch Self Cut flat drill bits drill three times faster than standard spade bits, and 10 times faster than previous versions. FEATURES Self-feeding threaded tip Manufactured from specially toughened steel Precision-ground tip and cutting edges for accuracy and clean holes 1/4\" hex shank manufactured to ISO 1173 E6.3 Supplied in a roll-up case, each bit measures 152mm in length APPLICATIONS Suitable for soft & hard wood, light building materials & plasterboard SPECIFICATIONS 1x 14mm 1x 16mm 1x 18mm 1x 20mm 1x 22mm 1x 24mm