Drill bit set Irwin 10502386 — 2 pcs, 4.5 mm diameter

Irwin drill bit set 10502386 contains two 4.5 mm diameter drill bits designed for general-purpose drilling with electric or cordless drills. Manufactured to DIN 338 standards with ground quality and precision ground cutting edges, these bits offer accurate hole-making and clean finishes. The cylindrical shank and universal 118° point shape make the set compatible with a wide selection of materials including plastics, soft metals and wood, while the ground flute improves chip removal and drilling speed. The compact set provides a spare bit for repetitive tasks or quick replacements during repair, installation and DIY work.

Advantages

The bits are produced to DIN 338 standards and feature precision-ground cutting edges for fast drilling and consistent hole quality. A universal 118° point shape helps initiate holes cleanly across different materials, and the ground flute design enhances chip evacuation to reduce clogging. The cylindrical shanks fit standard drill chucks securely, and supplying two matching bits ensures continuity of work when one becomes worn or damaged. Overall construction and finishing are targeted to deliver accurate diameters and reliable performance for common workshop tasks.

Suitable for

• Drilling holes in wood for fittings, dowels and pilot holes
• Drilling soft metals such as aluminum and brass for light fabrication
• Making holes in plastic components for assemblies and repairs
• General maintenance, installation and do-it-yourself projects requiring 4.5 mm holes

Key specifications

• Quantity: 2 pieces
• Diameter: 4.5 mm
• Overall length: 80 mm
• Point angle: 118° universal point
• Shank type: cylindrical shank
• Standards: manufactured to DIN 338
• Cutting: precision ground cutting edges
• Flute: ground flute for efficient chip removal
• Suitable materials: plastic, soft metal, wood

How to use

Install the appropriate 4.5 mm bit in the drill chuck and tighten securely. Select an appropriate drill speed for the material being worked: lower speeds for soft metals and plastics to avoid melting or work hardening, and medium to higher speeds for wood. Use steady, moderate pressure and keep the drill perpendicular to the work surface for accurate holes. For deeper holes, periodically withdraw the bit to clear chips and reduce heat build-up. Replace a worn bit with the spare included in the set to maintain hole quality.

Usage recommendations

Wear eye protection and follow standard safety practices. For metal drilling, consider applying cutting fluid to reduce heat and extend bit life. Secure workpieces with clamps to prevent movement and ensure perpendicular drilling. Avoid excessive side loading to prevent chipping of the cutting edges.