Pcs Step Drill Bit, Step Drill Bit, with Professional Aluminum Case, Hex Shank, with Self-Centering Pad, Precise Drilling in Steel, Metal

Material: Made of quality HSS steel and coated with Titanium, to reduce friction and heat. The center punch is made of shock-resistant alloy steel and its service life is increased tenfold. Convenient for positioning before drilling and breaking glass to escape. Titanium coating allows effortless cutting of steel sheets, aluminum sheets, copper panels, plastic and wood. It can automatically deburr holes to keep the drill clean. 47 Sizes in 5: The bitset contains five standard drill bits that can replace 47 individual drill bits. The center punch provides automatic, powerful, spring-loaded impact by adjusting the cap. 1/4 HEX quick release handle for easier tightening. This is the new HSS Steel Titanium Core Drill Bit Hole Cutter, made of high quality HSS steel, coated with Titanium to reduce friction and heat. Perfect for drilling holes in various materials, including steel, brass, wood, plastic, etc. Three-sided valve stem prevents the drill bit from slipping; The blade features a double-edged design for faster and more frequent cutting. Protective Packaging: There is a filler insert inside the drill bit box to prevent damage during shipping. Automatic Center Punch The center punch offers high-impact automatic spring strike through the cap adjustment; its brass body has a deeply knurled surface for slip-free control; and the tip with carbide tip makes the center punch 10 times stronger than normal, aluminum protective housing to make the tips not easy to dull