Hole Saw Bosch Bi‑Metal Single for Drill, Metal, Ø 3.7 cm, 1 pc

The Bosch Bi‑Metal Single Hole Saw for Drill is a 3.7 cm diameter cutting tool designed for producing clean circular openings in sheet metal, thin metal components, wood and certain plastics. Constructed from bi‑metal high‑speed steel with cobalt alloy, the saw combines hardness for sharp cutting and toughness to resist tooth breakage. Supplied as a single hole saw piece, it fits standard adapters and is suitable for general purpose drilling tasks when a precise round aperture is required for pipes, conduits or fittings.

Advantages

The bi‑metal construction with HSS and cobalt content increases heat resistance and reduces the chance of tooth failure during prolonged use. The Vario tooth strip provides a balanced tooth geometry that helps the tool glide through material and produce smoother cut edges. Lightweight design and universal compatibility with standard hole saw arbors make it convenient to install and handle in handheld drills.

Suitable for

• Cutting openings in sheet metal and thin metal parts
• Drilling holes for pipes and conduits in installation work
• Creating circular openings in wood and certain plastics
• Retrofit and maintenance tasks requiring precise round cutouts

Key specifications

• Cutting diameter: 3.7 cm
• Material: bi‑metal high‑speed steel with cobalt alloy
• Tooth type: Vario tooth strip for smooth cutting
• Weight: 81.6 g (approx.)
• Compatibility: fits standard hole saw adapters for drill use

How to use

Secure the hole saw onto a compatible arbor or adapter and tighten according to the arbor manufacturer’s instructions. Mark the center point for the required opening and position the pilot drill or guide to prevent wandering. Use steady, moderate feed pressure with a suitable drill at appropriate speed for the material: lower speeds for metals and higher speeds for wood and plastics. Apply cutting lubricant when working with metals to reduce heat and extend tool life, and allow the tool to cool periodically during extended cuts.

Usage recommendations

For best results when cutting metal, use cutting fluid and operate at low to medium speed while maintaining consistent pressure. Clear chips regularly and inspect the teeth for wear; replace the hole saw if cutting quality diminishes. Ensure the arbor and pilot drill are compatible and secure before starting to minimize vibration and improve cut accuracy.