Drill bit for metal Smart HSS cylindrical 2.1 mm 10 pcs (11-021)

Smart HSS cylindrical drill bits for metal, diameter 2.1 mm, pack of 10 pieces (model 11-021) are precision-engineered high-speed steel tools intended for drilling small, accurate holes in a range of ferrous and non-ferrous metals and their alloys. These straight-shank, cylindrical bits are suitable for use in hand-held drills and drilling machines where consistent hole size and straightness are required. The set of ten identical 2.1 mm bits provides spare tools for repeated tasks and reduces downtime caused by wear or breakage.

Advantages

Manufactured from high-speed steel, these drill bits combine hardness and toughness to resist heat and wear during metal drilling. The cylindrical (straight) shank ensures secure clamping in standard chucks and easy interchangeability. The small 2.1 mm diameter enables precise pilot holes and fine work in sheet metal, electronic components and thin-walled parts. Supplied as a 10-piece pack, the set offers consistent performance across multiple operations and convenient replacement of worn bits.

Suitable for

• Drilling small-diameter holes in sheet metal and thin metal parts
• Pilot hole drilling prior to tapping or reaming
• Electronics assembly and repair requiring precise, fine holes
• Workshop and maintenance tasks with manual or machine drills

Key specifications

• Material: High-speed steel (HSS)
• Shank type: Cylindrical (straight) shank for standard chucks
• Diameter: 2.1 mm
• Pack quantity: 10 pieces
• Intended use: Drilling in metal and metal alloys

How to use

Secure the drill bit in a properly adjusted chuck so the shank is clamped firmly and runs true. Select a suitable cutting speed and feed for the metal type and thickness: lower speeds for harder or thicker materials, higher speeds for softer metals and small diameters. Use light, steady pressure to avoid bending or breaking the small-diameter bit. Apply cutting fluid or lubricant when drilling harder metals to reduce heat buildup and extend tool life. Clear chips frequently to maintain cutting efficiency.

Usage recommendations

For best results, pre-mark and pilot-drill where necessary, use appropriate cutting fluid with steel and stainless alloys, and replace worn or damaged bits from the 10-piece pack to maintain hole accuracy and minimize the risk of tool failure.