Titanium-Coated M2 HSS Step Drill Bit with Hex Shank

I. Specifications

• Individual Models
• MA-6113: 3–13mm (Hex Shank, 11 Steps: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 mm)
• MA-6125: 6–25mm (Hex Shank, 10 Steps: 6, 8, 10, 12, 14, 16, 18, 20, 22, 25 mm)
• MA-6135: 6–35mm (Hex Shank, 13 Steps: 6, 8, 10, 13, 16, 18, 20, 22, 25, 28, 30, 32, 35 mm)
• 3PCS Professional Value Set (Best Seller)
• Contents: Includes one piece of each core size: MA-6113 (3-13mm), MA-6125 (6-25mm), and MA-6135 (6-35mm).
• Special Bonus: Comes with a complimentary multi-purpose storage case for effortless portability, moisture protection, and organized storage.
• Application: Perfect for covering small, medium, and large hole requirements—ideal for electrical wiring, control box installation, and sheet metal fabrication.

II. Material & Craftsmanship

• Top-Grade Materials: Crafted entirely from industrial-grade M2 High-Speed Steel (HSS) and enhanced with a precision titanium-coated surface.
• Enhanced Hardness & Heat Resistance: While HSS offers exceptional cutting performance, the titanium coating pushes surface hardness, wear resistance, and heat tolerance to the next level. Precision heat treatment minimizes friction and prevents high-temperature wear during continuous drilling, significantly extending tool life.
• Double-Flute Cutting Edge: Designed with dual cutting edges and precise step geometry for fast cutting speeds, smooth chip evacuation, and tight tolerances, minimizing cutting resistance and boosting efficiency.

III. Key Features

• All-in-One Versatility: Specially engineered for electrical switchboard installation, control box modification, sheet metal work, and hole enlargement. Eliminates the hassle of frequently changing bits and drills multiple diameters in one pass.
• Wide Application: Highly versatile for drilling and precision machining on metal sheets (iron, copper, aluminum, thin stainless steel), wood, and plastics.
• Trusted Quality: Backed by over 30 years of industry experience, highly recommended by professional electricians, sheet metal workers, and hardware specialists.

IV. Usage & Maintenance Guide

【Proper Usage】

• Tool Compatibility: Features a standard Hex Shank design suitable for standard hand drills, cordless impact drivers, and drill presses.
• No Pilot Hole Needed: Step drills feature self-centering and efficient cutting properties. For large-sized holes, direct center drilling is recommended without pre-drilling a pilot hole to maintain cutting stability and prevent chipping.
• Speed Control: Recommended operating speed is ≤ 500 r.p.m. The larger the hole diameter, the slower the drill speed should be. High-speed blind drilling is strictly prohibited to prevent overheating and tool damage.
• Cutting Technique: Feed slowly using an intermittent "engage-and-release" technique, and always use cutting oil or water for proper cooling and lubrication to maximize tool life.

【Routine Maintenance】

• Cleaning: Remove residual chips and debris from flutes after use. Wipe away oil, sweat, or cutting fluid with a clean cloth and store in a dry environment.
• Periodic Oiling: Apply a thin layer of rust-preventive or lubricating oil to the metal surface if storing for extended periods.
• Storage: Keep securely in the storage case to prevent edge damage caused by impact.