RUKO LOS-HSSCo-65mm HSS-Co Bi-Metal Hole Saw, 65 mm Diameter, 38 mm Cutting Depth, 8% Cobalt, Vario-Pitch Teeth, 5/8 inch-18 UNF Thread

With an 8% cobalt-enriched HSS-Co bi-metal construction, this 65 mm hole saw delivers high heat resistance and a long lifespan when cutting through steel up to 1000 N/mm², stainless steel, non-ferrous metals, wood, plastics, and plasterboard. The vario-pitch tooth pattern reduces vibration and improves chip evacuation, while ejection slots allow quick slug removal.

Overview

The RUKO LOS-HSSCo-65mm is a professional-grade bi-metal hole saw engineered for clean, accurate holes in demanding materials. Its 38 mm cutting depth covers most sheet metal, pipe, and panel applications, and the 5/8"-18 UNF thread fits standard arbors (e.g., Ruko 106001, 106002).

What stands out

• 8% cobalt HSS-Co bi-metal teeth for high wear resistance
• Vario-pitch tooth geometry for smoother cutting and less chatter
• Ejection slots for fast slug removal
• Polished/ground finish for precise concentricity
• Compatible with standard 5/8"-18 UNF arbors

Technical details

• Diameter: 65 mm
• Cutting depth: 38 mm
• Material: HSS-Co bi-metal (8% cobalt)
• Tooth type: Vario-pitch
• Arbor thread: 5/8"-18 UNF
• Suitable for: Steel (up to 1000 N/mm²), stainless steel, non-ferrous metals, wood, plastics, plasterboard

Our verdict

A robust, high-performance hole saw for professionals who need consistent results in tough materials. The cobalt bi-metal edge and vario-pitch teeth set it apart from standard HSS saws.