RUKO Bi-Metal Hole Saw 108 mm LOS-BiM-108mm

Drilling large-diameter holes in wood, metal, plastics, and plasterboard can quickly dull standard hole saws, but the RUKO BiM 108 mm hole saw solves this with a welded bi-metal construction that combines a tough HSS/cobalt tooth edge with a flexible alloy body. The variable 4/6 TPI tooth pitch cuts fast and clears chips efficiently, while the 40 mm cutting depth handles thick materials in a single pass.

Who is it for

This hole saw is for electricians, plumbers, carpenters, and serious DIYers who need clean, repeatable 108 mm holes in wood, plywood, plastics, plasterboard, non-ferrous metals, and mild steel. It fits any standard hole saw arbor with the appropriate thread size (arbor sold separately).

Main features

• 108 mm cutting diameter for large openings
• Bi-metal construction: HSS/cobalt teeth welded to a tough alloy body
• Variable 4/6 TPI tooth pitch for fast cutting and efficient chip removal
• 40 mm cutting depth for thick materials
• Precision-ground teeth for clean, burr-free holes
• High resistance to heat and wear for long service life
• Silver/black finish

Specifications

• Product type: Hole saw
• Diameter: 108 mm
• Cutting depth: 40 mm
• Tooth pitch: Variable 4/6 TPI
• Material: Bi-metal (HSS/cobalt alloy)
• Arbor compatibility: Requires separate arbor (e.g., Hex, SDS-Plus)
• Recommended materials: Wood, plywood, plastics, plasterboard, non-ferrous metals, mild steel
• Construction: Welded bi-metal
• Weight: 0.38 kg
• Dimensions: 108 mm (diameter) × 40 mm (depth)

Tips

Use a pilot drill and arbor matched to your power tool's chuck. For metal, apply cutting fluid and use low speed; for wood and plastics, higher speeds give cleaner cuts. Clear chips frequently to avoid overheating.