Jefferson Tools JEFSTPSHSS03 3 Piece HSS Step Drill Set 4–12mm 4–20mm 4–32mm

The Jefferson Tools JEFSTPSHSS03 3 Piece HSS Step Drill Set delivers reliable drilling performance across multiple diameters with fewer tool changes. Each step drill is manufactured from high speed steel (HSS) for durability and strength, making these bits suitable for cutting through sheet metal, plastics and composites with precision.

Featuring a spiral flute design, this set helps evacuate chips efficiently for clog-free, smooth drilling, reducing heat build-up and improving overall cutting action. The stepped profile allows progressive hole enlargement from a single bit, offering versatility and efficiency in one set.

Ideal for professionals and DIY users alike, the set includes three universally sized HSS step drills covering 4–12mm, 4–20mm, and 4–32mm ranges — perfect for rapid hole sizing and enlarging tasks without needing multiple individual drills. Whether on site, in the workshop or on the job, this set enhances productivity for metalworking, electrical, plumbing, HVAC, and maintenance applications.

✅ Key Features

• High Speed Steel (HSS) construction for strength and durability

• Spiral flute design for efficient chip removal and smooth drilling

• Clog-free precision performance

• Three step drill sizes included: 4–12mm, 4–20mm, and 4–32mm

• Ideal for drilling in sheet metal, plastics and general workshop materials

✅ Specifications

• Product type: Step Drill Set

• Material: High Speed Steel (HSS)

• Set sizes: 4–12mm, 4–20mm, 4–32mm

• Gross weight: 0.5 kg

✅ What’s Included

• 1 × 4–12mm HSS Step Drill Bit

• 1 × 4–20mm HSS Step Drill Bit

• 1 × 4–32mm HSS Step Drill Bit