3-Piece HSS Step Drill Bit Set – Wood, Metal & Plastic | 3–20mm

• Set includes: 3 × HSS Step Drill Bits — sizes 3–12mm, 4–12mm, 4–20mm
• Material: High Speed Steel (HSS) — hard, wear-resistant, long-lasting
• Coating: Nitride black finish — reduces friction and extends bit life
• Shank: Hex shank design — prevents slipping in any standard drill chuck
• Groove: Dual-groove design — faster, smoother and cleaner cuts
• Works on: Wood, aluminum, plastic, insulating board (up to ~5mm thick)
• Certification: CE certified
• Package includes: 3 × Step Drill Bits

Why You'll Love It

✔ Three sizes, every hole covered — 3–12mm, 4–12mm and 4–20mm in one set handles virtually any drilling task

✔ No slipping, no stripping — hex shank locks into your drill chuck securely every time

✔ Works on multiple materials — wood, aluminum, plastic and insulating board all drilled cleanly without switching bits

✔ Dual-groove design — cuts faster with less heat buildup, giving you cleaner holes and longer bit life

✔ Each step clearly marked — depth diameter is etched onto every step so you always drill to the exact size you need