GREENER Tower Drill Bit Hole Opener Metal Stainless Steel Reamer High Hardness Cone [4-12]

Certified quality assurance with multiple certifications

High-tech enterprise recognition (SE, SP20)

Recognized as a famous brand in Shandong Province

High hardness and sharpness due to cobalt nitriding treatment

Nitriding process enhances wear resistance, fatigue resistance, corrosion resistance, and high-temperature resistance

Suitable for various metal processing applications including stainless steel, aluminum alloy, color steel tile, steel plate, cast iron, and copper plate

Step drill design with 15 size options for versatile hole diameters ranging from 4mm to 32mm

Hexagonal shank for secure grip and reinforced handle to prevent breakage

Easy diameter identification with platinum color ring for quick size recognition

Durable and long-lasting, capable of drilling over 800 holes in stainless steel

Compatible with electric drills, bench drills, and screwdrivers; recommended usage tips provided for optimal performance and tool protection

Made with M35 high-speed steel with spiral grooves

Cobalt nitriding surface treatment for enhanced hardness and durability