Hole saw, c.k tools Cup saw 424003, 20 mm diameter

The c.k tools Cup saw 424003 is a 20 mm diameter hole saw designed for making precise circular openings in materials suitable for hole-cutting accessories. It mounts to compatible arbors and drills to create clean, consistent 20 mm holes for installations, cable routing, fittings or other tasks that require a small round aperture. The cup-style cutting head is compact and intended for professional and DIY use where accuracy and repeatability are needed.

Advantages

This 20 mm cup saw delivers accurate hole dimensions with minimal tear-out when used in appropriate materials. Its compact cup form factor allows access in confined spaces and simplifies alignment with pilot bits or arbors. The tool is easy to fit to standard arbors and can be used with common electric or cordless drills, making it practical for on-site and workshop work. Durable cutting edges maintain performance across multiple cuts when used within recommended material limits.

Suitable for

• Creating 20 mm holes for cable glands, conduit entries and small fittings
• Installing plumbing or electrical fixtures that require small circular openings
• Cutting access holes in building materials, panels and composite boards
• General maintenance, repair and light construction tasks

Key specifications

• Cutting diameter: 20 mm
• Tool type: cup-style hole saw
• Compatibility: designed for use with standard arbors and drills
• Typical applications: wood, plastic, thin metal sheets and composite panels (subject to material suitability)
• Form factor: compact cup head for confined space access

How to use

Secure the cup saw to a compatible arbor according to the arbor manufacturer’s instructions, ensuring the pilot bit (if fitted) is centered. Clamp or secure the workpiece to prevent movement. Mark the hole position, start drilling at low speed to establish the pilot or center, then increase speed steadily while applying consistent, moderate pressure. Withdraw periodically to clear debris and avoid overheating. After cutting, deburr the hole edges as required for the final installation.

Usage recommendations

Use appropriate drill speed and feed for the material being cut, and wear suitable personal protective equipment such as eye protection and gloves. Confirm material compatibility before use and avoid excessive side loading to prolong cutting edge life.