Drill bit set Smart HSS solid cylindrical 12 mm, 5 pcs (MPN 24-120)

Set of five Smart HSS solid cylindrical drill bits with a 12 mm cutting diameter, designed for general-purpose drilling in metals and common workshop materials. These straight-shank bits are made from high-speed steel (HSS) providing hardness and wear resistance suitable for handheld drills and drill presses with compatible 12 mm shank capacity. The kit contains five identical pieces for replacement and repeated use during repairs, metalworking and construction tasks.

Advantages

High-speed steel construction offers a balance of toughness and cutting performance for drilling into mild steel, non-ferrous alloys and other common materials. The cylindrical (straight) shank ensures simple mounting and compatibility with standard chucks. A consistent 12 mm diameter across the set makes it easy to prepare multiple holes of the same size without frequent tool changes. The set format supplies spare bits for extended work sessions and reduces downtime in workshop and site environments.

Suitable for

• Drilling holes in mild steel and non-ferrous metals
• General workshop repairs and maintenance
• Use with handheld drills and drill presses that accept straight shanks
• Construction site tasks requiring repeated same-size holes

Key specifications

• Material: high-speed steel (HSS)
• Cutting diameter: 12 mm
• Shank type: solid cylindrical (straight) shank
• Quantity in set: 5 pieces
• Application: metalworking and general-purpose drilling

How to use

Select a compatible drill or drill press and securely clamp the straight shank bit in the chuck. Mark the drilling point and, if required, use a center punch to prevent wandering. Drill at a steady feed rate appropriate to the material being worked; when drilling metal, use cutting fluid or oil to reduce heat and improve tool life. Withdraw the drill periodically to clear chips on deep holes and allow the bit to cool. Replace with another bit from the set as needed when signs of wear or reduced cutting performance appear.

Usage recommendations

For best results when drilling metals, start at a lower speed and increase as appropriate for the material; apply cutting fluid to prolong bit life. Ensure the drill chuck is rated for the 12 mm shank and that the bit is firmly clamped to prevent runout. Store the bits dry and clean to avoid corrosion and inspect cutting edges before use.