Drill Bit Forsage 4.4 mm HSS+Co, metal drill bits, set of 2

Forsage metal drill bits with a 4.4 mm diameter are made from HSS+Co high-speed steel with added cobalt to improve hardness and wear resistance. Supplied as a set of two, these metal drill bits are intended for creating precise 4.4 mm holes in steel and other metallic materials. The straight shank is compatible with standard drill chucks, making the set suitable for workshop, repair and professional metalworking applications where consistent hole size and tool durability are required.

Advantages

The HSS+Co material provides increased heat resistance and longer cutting life compared with standard high-speed steels, resulting in reduced wear during repeated drilling operations. A precisely ground tip assures reliable centring and reduced walking on metal surfaces. Being supplied as a set of two ensures immediate replacement or parallel use, improving workflow efficiency during tasks that require multiple holes of the same diameter.

Suitable for

• Drilling holes in steel, stainless steel and other ferrous metals
• Workshop repairs and maintenance tasks
• Metal fabrication and assembly where 4.4 mm holes are specified
• Use with handheld drills and bench drills equipped with standard chucks

Key specifications

• Material: high-speed steel with cobalt (HSS+Co)
• Diameter: 4.4 mm
• Quantity in set: 2 pieces
• Shank type: straight shank for standard chucks
• Tip: precision ground for accurate centring
• Intended use: drilling in metal

How to use

Secure the 4.4 mm drill bit in the drill chuck and tighten firmly to prevent slippage. Mark the drilling point and, for best results on flat metal surfaces, create a small centre punch indent to improve initial bite. Use appropriate cutting speed and feed pressure for the metal being drilled; lower speeds and steady pressure are recommended for harder alloys. Apply cutting fluid or lubricant as needed to reduce heat and prolong bit life. Withdraw the bit periodically to clear chips when drilling deep holes.

Usage recommendations

For extended tool life, match drilling speed and coolant to the workpiece material, avoid excessive lateral force, and replace or resharpen bits once wear reduces accuracy. Store the two-piece set in a dry, organised toolbox to prevent corrosion and damage to the cutting edges.