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.Ideal for mobile repair and assembly work Rapidaptor holder for rapid bit change 1/4" drive suitable for power screwdrivers Rapidaptor universal holder non-magnetic and tapping drill bits with 1/4" drive In practical and robust plastic box