Drill bit set GRAPHITE HSS-TiN 25 pcs, sizes 1.0–13.0 mm

Set of 25 GRAPHITE HSS-TiN drill bits covering diameters from 1.0 mm to 13.0 mm designed for metalworking and general workshop tasks. The bits are made from high-speed steel (HSS) with a titanium nitride (TiN) coating to increase surface hardness and extend tool life. The assortment provides a continuous range of small to medium diameters suitable for precision drilling, maintenance, and fabrication using handheld or bench drilling machines.

Advantages

The HSS base material offers good toughness and heat resistance during drilling in ferrous and non-ferrous metals. The TiN coating reduces friction, improves wear resistance and helps maintain cutting performance for a longer period compared with uncoated HSS bits. A broad set of diameters from 1.0 mm up to 13.0 mm covers common workshop needs and reduces the need to change bits frequently. The shanks are compatible with standard drill chucks, enabling use in both portable and stationary drills.

Suitable for

• Drilling holes in mild steel, stainless steel (light operations), aluminum and other non-ferrous metals
• Workshop repair and maintenance tasks
• Prototype and fabrication work requiring a range of sizes
• Use with handheld drills and bench/column drills

Key specifications

• Number of pieces: 25
• Diameter range: 1.0 mm to 13.0 mm
• Material: high-speed steel (HSS)
• Coating: titanium nitride (TiN)
• Shank type: straight round shank for standard chucks

How to use

Select the appropriate drill bit diameter for the required hole size and mount it securely in the drill chuck. Use correct drill speed and feed for the workpiece material — lower speeds for harder metals and higher speeds for softer metals such as aluminum. Apply cutting lubricant when drilling ferrous materials to reduce heat and extend bit life. Start drilling at a steady, controlled feed, and clear chips regularly to avoid clogging. After use, clean the bits and store them in their case to protect the TiN coating.

Usage recommendations

For best results, match drill speed and cutting fluid to the material being drilled: use moderate speed and cutting oil for steel, lower speed for stainless steel, and higher speed without heavy lubrication for aluminum. Replace bits that show excessive wear or chipping to maintain hole quality and operator safety.