These DEWALT multi-material drill bits can be used in wood masonry and metal and are ideal when drilling near to corners and edges. The drill bits have a fully supported carbide head which gives faster drilling and a non slip shank which ensures maximum retention in chuck. They can be used in rotary or percussion drilling modes.The DEWALT DEWDT6516QZ multi-material drill bit has the following dimensions:Size: 3.5mm x 113mm.PTDDEWDT6516QZ