Impact control Multi Construction Screwdriver Bit Set which can be used with all impact drivers and normal drill drivers for heavy duty applications. These Multi Construction drill bits are suitable for drilling in most materials such as masonry, brick, light building materials, multi-layer materials, ceramics and tiles, wood, plastic, an metals. The screwdriver bits are ideal for heavy duty use and can be used with high Voltage impact drivers. Multi Construction Drill Bits Features Suitable for drilling in most materials such as masonry, brick, light building materials, multi-layer materials, ceramics and tiles, wood, plastic, an metals Centring tip for a precise drilling start and good guidance in the drilled hole Diamond ground cutting edges enables multi-purpose drilling 4 Flute.