NACHEE 3Pcs Metric Titanium Coated Step Drill Bit Set, HSS Cone Drill Bit with 1/4" Hex Shank Drive Quick Change（3-12 mm 4-12 mm 4-20 mm）for DIY Woodworking, Plastic Wood - nc drillbit4

• UPC   779640709245
• Two-flute design, clears chips faster, smooth cutting. The drill tip adopts a 135°bifurcated tip design, prevents the step drill bit from slipping during operation. Titanium plating process to reduce friction and heat. high-speed steel construction and for longer cutting edge life even at extreme temperatures. performs well in heat, corrosion, and rust resistance. The step drill bit is durable and strong enough to punch and drill clean holes in materials like wood, plastic etc. It can also help to enlarge existing holes and clean edges. A necessity for family or handyman or professionals. Perfect for home repairs and light jobs such as drilling holes in aluminum, copper, Wood, PVC sheet, Insulation Boards, and many other types of sheet metal. Suitable for hand-held drilling rigs, drilling machines, milling machines, and machining centers, for metal sheet, maintenance, and modification, bridge doors, and windows, home appliances, etc.