Irwin bi-metal hole saw 19 mm, Crown "IRWIN" BI-METAL 19 mm

Irwin bi-metal hole saw 19 mm, Crown "IRWIN" BI-METAL 19 mm is a circular cutting tool designed for creating precise 19 mm diameter holes in a range of materials. The saw blade combines high-speed steel cutting edges with a flexible alloy body to provide durability and edge retention when cutting metal, thin steel, and other construction materials. It is intended for use with standard arbors and power drills, enabling fast hole-making for plumbing, electrical installations and general workshop tasks.

Advantages

The bi-metal construction delivers a balance of toughness and wear resistance, extending tool life compared with standard carbon steel hole saws. The 19 mm diameter offers a compact, repeatable hole size for cable glands, pipe fittings and conduit entry. Teeth geometry and material selection are optimized to cut cleaner holes in thin metal and sheet materials while resisting chipping and premature dulling. Compatibility with common arbors and drills allows quick installation and stable cutting performance.

Suitable for

• Drilling holes for electrical conduit and cable glands
• Creating openings for plumbing fittings and pipework
• Cutting holes in thin steel, aluminium and sheet metal
• General workshop tasks requiring repeatable round holes

Key specifications

• Cutting diameter: 19 mm
• Material: bi-metal (high-speed steel teeth bonded to alloy body)
• Compatibility: fits standard hole saw arbors and power drills
• Typical applications: metal and sheet material cutting

How to use

Secure the appropriate arbor to the 19 mm hole saw and attach the arbor to a power drill with sufficient torque rating. Mark the hole center on the workpiece and, if possible, use a pilot bit or center punch to prevent walking. Start drilling at low speed to establish the cut, then increase speed moderately while applying steady, even pressure. Use cutting fluid or coolant when cutting steel to reduce heat and extend tool life. After completing the cut, retract the saw and remove the slug carefully; inspect the teeth before next use.

Usage recommendations

For best results when cutting metal, use a lubricating cutting fluid, maintain steady drill speed without excessive feed force, and allow the bi-metal teeth to cool periodically on longer cuts. Store the hole saw in a dry place to prevent corrosion and check the teeth for wear before use to ensure clean, accurate holes.