Drill bit Proline HSS-TiN 4.5 mm, set of 2 — twist drill for metal and wood

Proline HSS-TiN 4.5 mm twist drill bit set (2 pieces) for metal and wood. Made from high-speed steel and coated with titanium nitride to increase hardness and wear resistance. The bits have a 135° split point with adjustable chisel angle, ground flutes for improved chip evacuation and hole finish. Diameter 4.5 mm, working length 47 mm, overall length 80 mm.

Advantages

The titanium nitride (TiN) coating extends tool life and reduces friction during drilling. A 135° split point and adjustable chisel angle reduce walking and make centring easier on metal surfaces. Ground flutes improve chip removal and deliver a cleaner hole edge. The 4.5 mm diameter and defined working length provide consistent, precise holes for general repair and workshop tasks.

Suitable for

• Drilling through steel and non-ferrous metals
• Drilling in wood and certain plastics
• Use with handheld drills and drill presses
• DIY, workshop maintenance and professional repair tasks

Key specifications

• Brand: Proline
• Model: HSS-TiN
• Diameter: 4.5 mm
• Working length: 47 mm
• Total length: 80 mm
• Point angle: 135° (split point) with adjustable chisel angle
• Coating: Titanium nitride (TiN)
• Set quantity: 2 pieces
• MPN: 5154385
• EAN: 5903755154385

How to use

Mark and centre the drilling point; use a centre punch on metal for improved accuracy. Secure the workpiece and select an appropriate speed: lower rpm for hard metals, higher rpm for wood and plastics. Use light, steady pressure and clear chips frequently; for deeper holes retract periodically to remove swarf. For best life and finish, consider applying cutting fluid when drilling metals.

Usage recommendations

Store the drill bits in a dry place and avoid excessive side load to prevent chipping. Replace bits once wear or significant loss of cutting performance is observed to maintain hole quality and safety.