Drill bit for metal GRAPHITE 2.5 mm titanium-coated cylindrical set of 3 (57H118)

GRAPHITE drill bit set 57H118 contains three cylindrical shank metal drill bits with a 2.5 mm cutting diameter and titanium coating. These bits are designed for drilling steel and other metals and are compatible with handheld drills and drill presses. The titanium coating increases surface hardness and helps reduce heat build-up during cutting, extending tool life under normal metalworking conditions.

Advantages

The titanium-coated cutting edges deliver improved wear resistance compared with uncoated high-speed steel bits, while the cylindrical shank ensures straightforward mounting in standard chucks. The 2.5 mm diameter is suitable for producing small-diameter through holes and pilot holes in thin to medium-thickness metal sheets. The set of three provides spare bits for repeated tasks or replacement when sharpening is required.

Suitable for

• Drilling holes in steel sheets and non-ferrous metals
• Pilot holes for tapping and fastening
• Workshop maintenance and repair tasks
• DIY metalworking projects and hobby use
• Light industrial drilling operations

Key specifications

• Diameter: 2.5 mm
• Shank type: cylindrical
• Coating: titanium
• Material: high-speed steel (HSS) base with coating
• Quantity: set of 3 drill bits
• Intended material: steel and other metals

How to use

Secure the drill bit in the chuck of a handheld drill or drill press, ensuring the shank is fully seated and the chuck is tightened. Select an appropriate rotational speed for metal drilling (moderate to high speed for small diameters) and apply steady, moderate feed pressure. Use cutting fluid or lubricant when drilling steel to reduce friction and improve hole quality. Withdraw the bit periodically to clear chips and prevent clogging; after use, remove chips from the flutes and store the bits in a dry location.

Usage recommendations

For best results, use a compatible cutting lubricant when drilling steel, match drill speed to material thickness, and avoid excessive pressure that can cause bit breakage. Replace or resharpen bits if edges become dull to maintain hole precision and reduce heat generation.