Hole saw Dedra 08W160 bi-metal 160 mm diameter

Bi-metal hole saw Dedra 08W160 with a 160 mm cutting diameter is a tool designed for making large circular openings in metal, thin sheet materials, and some plastics. Constructed from bimetallic steel, the saw combines high-speed steel cutting edges with a flexible, tougher backing for improved resistance to heat and impact during intensive drilling. The tool is intended for use with handheld power drills and drill drivers, providing a stable cutting action for HVAC, plumbing, electrical installation work and general fitting of ducts and pipes.

Advantages

The bi-metal construction offers extended blade life compared with standard carbon steel saws while maintaining cutting performance on ferrous and non-ferrous metals. A 160 mm diameter enables cutting of large holes in a single pass, reducing the need for multiple steps. The saw’s tooth geometry and material composition are suited to resist heat buildup and reduce premature dulling when used with appropriate speeds and cutting fluids. Compatible with common drill arbors, it delivers consistent roundness and clean edges when used correctly.

Suitable for

• Cutting circular openings in sheet metal for ventilation ducts and flanges
• Creating holes for plumbing pipes and large cable conduits
• Installing round fixtures or mounting plates in metal or plastic panels
• Professional and DIY repair or renovation tasks requiring large-diameter holes

Key specifications

• Cutting diameter: 160 mm
• Material: bi-metal (high-speed steel teeth bonded to flexible backing)
• Intended use: metal, thin sheet materials, some plastics
• Compatibility: designed for use with handheld power drills and drill drivers using appropriate arbor
• Typical operating method: through-drilling with coolant or lubricant recommended for metal

How to use

Mount the hole saw securely on a compatible arbor and attach it to a suitable power drill with adequate torque. Mark the center of the hole and use a pilot bit to establish position if the arbor includes one. Start drilling at low speed to create a guide, then increase speed within the recommended range for metal cutting while applying steady, even pressure. Avoid excessive side loads and withdraw periodically to clear swarf. Use cutting fluid or lubricant when drilling metal to reduce heat and extend tool life. After cutting, remove burrs from the hole edge as needed.

Usage recommendations

For best results when cutting metal, use a drill with adjustable speed and sufficient torque, keep RPMs appropriate for the material thickness, and apply cutting fluid. Wear eye and hand protection, clamp workpieces securely, and allow the saw to cool between long cuts to prevent overheating and premature wear.