Four Spiral Flute Step Drill Bit Set Step Bits for Hole Drilling in Stainless Steel Aluminum Wood Plastic, 1/8"-1-3/8" 5PCS High-Speed Steel Unibit Step Bits with 1/4" and 3/8" Hex Shank

Product Information Packaging content: 5 Pcs Step Drill Material: Premium High-speed Steel (HSS) Cutting Range: stainless steel, mold steel, cast iron, aluminum alloy, copper, PVC， Wood, etc Color: Black Product Introduction Easy Cutting: This step drill set comes with four sharp cutting blades, ensuring fast and smooth drilling, effortlessly cutting steel, aluminum, copper, and other hard materials like a hot knife through butter! 5 Pcs Step Drill:‌ ‌ The comprehensive set covers 90% of common metalworking applications with graduated diameters: 3/16"-1/2" (6 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps),1/8"-1/2" (13 steps), 3/16"-1-3/8" (19 steps). High Quality: Our drill bits are made of sturdy high-speed steel and titanium coating, ensuring excellent hardness and the ability to cut harder materials faster while withstanding high temperatures and cutting forces, ensuring long-lasting performance. Quick Release Design: 1/4 inch hexagonal handle and quick release slot ensure safe connection and easy replacement. The four spiral groove design effectively discharges chips from the hole, reduces the possibility of blockage, and improves drilling efficiency. Portability: Our metal step drill bits come with a convenient storage box, ensuring that all your drilling tasks can be easily organized and carried. Clear size markings on each drill bit facilitate quick identification.

• Easy Cutting: This step drill set comes with four sharp cutting blades, ensuring fast and smooth drilling, effortlessly cutting steel, aluminum, copper, and other hard materials like a hot knife through butter!
• 5 Pcs Step Drill:‌ ‌ The comprehensive set covers 90% of common metalworking applications with graduated diameters: 3/16"-1/2" (6 steps), 1/4"-3/4" (9 steps), 3/16"-7/8" (12 steps),1/8"-1/2" (13 steps), 3/16"-1-3/8" (19 steps).
• High Quality: Our drill bits are made of sturdy high-speed steel and titanium coating, ensuring excellent hardness and the ability to cut harder materials faster while withstanding high temperatures and cutting forces, ensuring long-lasting performance.
• Quick Release Design: 1/4 inch hexagonal handle and quick release slot ensure safe connection and easy replacement. The four spiral groove design effectively discharges chips from the hole, reduces the possibility of blockage, and improves drilling efficiency.
• Portability: Our metal step drill bits come with a convenient storage box, ensuring that all your drilling tasks can be easily organized and carried. Clear size markings on each drill bit facilitate quick identification.