About this productSpecifications :Material: High quality high-quality titanium-coated steel to reduce friction and heat. The centering punch is made of impact-resistant alloy steel, which makes it ten times more durable. Convenient for positioning and breaking glass leaks before drilling. Titanium coating effortlessly cuts steel, aluminum foil, copper, plastic and wood panels. It automatically deburrs the hole to keep the drill bit clean.5 sizes out of 47: The drill set contains 5 standard drill bits that replace 47 individual bits. The centering punch provides automatic, powerful, spring-loaded impact by adjusting the cap. 1/4 HEX quick-release handle for easier tightening. The new HSS steel drill bit is made from high-quality HSS steel with titanium coating to reduce friction and heat. Great for drilling into a variety of materials such as steel, brass, wood, plastic, etc. The three-sided rod prevents the drill from slipping; The blade is double-edged for faster and more frequent cutting. Protective packaging: The drill box is padded inside to prevent damage during transport. Automatic punchThe centering punch features a high-impact automatic spring striker with cap adjustment; its brass body has a deeply knurled surface for anti-slip control; Carbide tip makes the centering punch 10 times stronger than normal and the aluminum protective housing makes the tip difficult to blunt.