Product Info 7-piece tapping drill bit set in a stable plastic box for the cutting of metric threads. The hexagonal bit shaft ensures very good power transfer. The finely-tuned material elasticity provides for great durability. Perfect chip removal and a low tilt risk. The Rapidaptor ensures rapid bit change without any extra tools. 1/4'' hexagon, suitable for Drill Taps included: 1x 3x33 mm1x 4x35 mm1x 5x36 mm1x 6x40 mm1x 8x40 mm1x 10x40 mm