Jadever JDJD1402 Step Drill Bit 4-20mm | Titanium Coated Hole Cutter with Round Shank

The Jadever JDJD1402 Step Drill Bit 4–20mm is a durable and precision-engineered drilling accessory designed for smooth and efficient hole enlargement. Made from high-speed steel with a titanium coating, it offers enhanced hardness, heat resistance, and longer service life compared to standard drill bits.

Its multi-step design allows users to drill multiple hole sizes ranging from 4mm to 20mm using a single bit, reducing the need for frequent bit changes and ensuring faster workflow. This makes it ideal for electrical work, metal fabrication, plumbing, automotive repair, and general workshop applications.

The titanium-coated surface reduces friction and heat buildup, resulting in cleaner cuts and improved drilling performance. The round shank ensures compatibility with most standard drill machines, providing stable and secure operation during use.

Whether used by professionals or DIY users, the Jadever JDJD1402 Step Drill Bit delivers precision, durability, and efficiency for a wide range of drilling tasks.

Key Features

• Step drill range: 4–20mm
• Titanium coated for durability and heat resistance
• High-speed steel construction for long life
• Multi-step design for multiple hole sizes in one bit
• Produces clean, burr-free holes
• Suitable for metal, plastic & wood
• Round shank compatible with most drills
• Ideal for electrical, plumbing & fabrication work
• Reduces need for multiple drill bits

Technical Specifications

• Model: JDJD1402
• Drill Range: 4–20mm
• Material: High-Speed Steel (HSS)
• Coating: Titanium
• Shank Type: Round shank
• Application: Metal drilling, plastic, wood, electrical work

What’s in the Box

• 1 × Jadever JDJD1402 Step Drill Bit (4–20mm)
• 1 × Protective Case / Sleeve
• 1 × Packaging Box