Titanium Coated HSS Twist Drill Bits - 8Pcs 3-10mm Serrated Grooving Cutting Carpenter Side Cutting Tap Spiral Saw Drill Bit Woodworking Wood Metal Plastic Hole Holesaw Tool (8)

Titanium HSS Serrated Groove Drill Bits – Drill & Slot Thin Sheets with One Set

🛠️ Sharp, Durable Bits for Fast DIY Wood & Metal Work

Turn your everyday drill into a powerful slotting and drilling tool. This 8-piece titanium-coated HSS serrated groove drill bit set is designed to cut clean holes and pull grooves in thin sheets, helping you finish light-duty projects faster and with less effort.

⚙️ High-Quality HSS with Titanium Coating

Each bit is crafted from high speed steel (HSS) and finished with a titanium coating for superior hardness and wear resistance. The sharp cutting edges stay sharper longer than ordinary carbon steel bits, giving you reliable performance project after project.

The fully ground spiral flute quickly removes chips and reduces friction, helping the bit run cooler and extending its service life even under frequent use.

📏 8 Popular Sizes for Everyday Tasks

One compact kit covers most of your daily drilling and slotting needs. The set includes:

3 / 4 / 5 / 6 / 6.5 / 7 / 8 / 10 mm
(approx. 0.12 / 0.16 / 0.20 / 0.24 / 0.26 / 0.28 / 0.31 / 0.39 inch).

Total length ranges from about 60 mm to 105 mm (2.4–4.1 inch), ideal for light-duty work on thin boards and sheets without adding unnecessary bulk to your toolbox.

🚀 Recommended Speeds for Smoother Drilling

For cleaner holes and less burning, match the speed to the bit size. Smaller bits (3–5 mm) work best at higher speeds up to around 1400 rpm, while larger bits (8–10 mm) perform better at lower speeds around 400–500 rpm.

Use higher speeds on wood and plastic, and slower speeds on metal sheets. Choosing the right speed helps you get smoother edges, less chatter and a more comfortable drilling experience.

🎯 135° Split Point for Accurate, Quick Starts

The 135° split point tip bites into the material quickly and resists walking, so your holes start exactly where you mark them. This reduces the need for center punching and keeps your work neat and precise.

Combined with the spiral flute design, the split point ensures efficient chip evacuation and stable drilling in thin wood, MDF, plastic and soft metals.

🪚 Serrated Body for Easy Slotting in Thin Sheets

The unique serrated belt along the bit body allows you to continue cutting sideways after breaking through the material. Once the hole is drilled, simply move slightly and let the serrations pull a groove through thin boards or sheets.

For best results, follow the instructions and cut in the reverse direction when slotting. This helps reduce grabbing, lowers friction and gives you a smoother, more controlled groove in thin materials.

🔧 Efficient Work on Wood, Plastic & Soft Metal

These serrated groove drill bits are ideal for pulling grooves, boring holes and cutting slots in:

• Thin solid wood, plywood and MDF (about 1–2 mm / 0.04–0.08 inch thick).
• Plastic boards and thin aluminum sheet.
• Aluminum alloy profiles and thin iron sheet.

The round shank fits most electric drills, cordless drills and bench drills, so you can use the same set across your workshop, job site and home garage.

📋 Specifications

Material	HSS high speed steel
Coating	Titanium coated surface
Point Angle	135° split point
Shank Type	Round shank
Diameter Sizes	3 / 4 / 5 / 6 / 6.5 / 7 / 8 / 10 mm (approx. 0.12–0.39 inch)
Total Length Range	Approx. 60–105 mm (2.4–4.1 inch)
Recommended Thickness	1–2 mm thin sheets (approx. 0.04–0.08 inch)
Compatible Tools	Electric drills, cordless drills, bench drills with round shank chuck

 

❓ FAQ

1. What materials can I drill with these bits?
They are designed for thin solid wood, plywood, MDF, plastic boards, aluminum, aluminum alloy and thin iron sheet. For very thick or hardened steel, please choose heavy-duty metal drill bits instead.

2. Why do you recommend reverse cutting when slotting?
Reverse cutting when using the serrated body to pull a groove helps reduce grabbing and friction on thin sheets. It gives you smoother control, less vibration and a cleaner edge on the finished slot.

3. Can I use this set with my standard cordless drill?
Yes. The round shank fits most standard cordless drills, electric drills and bench drills. Simply tighten the chuck firmly and adjust the speed according to the bit size and material.

4. Are these bits suitable for regular drilling as well as slotting?
Absolutely. The 135° split point tip drills clean, accurate holes, while the serrated body lets you continue cutting sideways to create grooves in thin materials.