6–25mm Titanium Spiral Step Drill Bit – Enclosure Hole Cutter

Product Overview

The 6–25mm Titanium Spiral Step Drill Bit is the perfect tool for drilling clean, accurate holes in controller enclosures. Sized specifically to cover the 25mm panel hole needed for our M25 4-Hole Cable Glands, this bit makes enclosure prep fast, repeatable, and professional.

It’s an ideal companion for our Cosmic 8-Series DIY pixel controller kits and any other project where you need clean cable entries in plastic or thin metal boxes.

Key Features

• 6–25mm stepped range – covers common enclosure and gland sizes, including 25mm for M25 fittings
• Titanium-coated spiral flutes – improved cutting performance and reduced friction vs. straight-flute bits
• Single-bit convenience – enlarge pilot holes progressively without changing bits
• Perfect for Boxco-style enclosures – great match for the housings used in Cosmic Controllers builds
• 1/4" hex shank – compatible with most cordless drills and impact drivers

Ideal For

• Drilling M25 holes for multi-hole cable glands
• Prepping enclosures for DIY pixel controller builds
• Adding extra pigtail or power entries to existing controller boxes
• General panel work in plastic, aluminum, and thin sheet metal

Technical Details

Usage Tips

• Start with a small pilot hole before stepping up to your final size.
• Run the drill at low to medium RPM and let the bit do the cutting — no excessive force required.
• Check fit frequently as you approach 25mm to get a snug gasket seal for IP-rated glands.
• Deburr the inside edge of the hole if needed for a clean, cable-friendly finish.

Recommended Pairings

• M25 4-Hole Cable Gland (IP68) – this bit is sized to drill the panel opening for a perfect fit.
• Cosmic DIY Pixel Controller Kits – prep your enclosure for pigtails, power, and accessories using a single step bit.